/sci/ - Science & Math

thats a yikes

>college precalculus

so that's thing

>>11072572
Wtf even is precalculus

>>11072572
>PRECALCULUS
imagine unironically being a brainlet lmao

ENCOURAGE ME NOT TO NECK MYSELF YOU ASSHOLES

>>11072610
You're stupid, oh well, study more than the average person to get along just as much.

>>11072572
Running start is generally better than advanced placement but whatever you were up to in high school you should have gotten at least part of calculus out of the way before college.

Perhaps you just go get a political science degree.

You've really just gotta practice out of your textbook a lot and for a long time

Trig is harder than calculus.

>>11072572
Just study lol what else do you want from us

>>11072572
3blue1brown

>>11072572
what do u want us to do. like if you fail precalc its pretty obvious that u didnt study or practice enough

>>11072572
precalc is easy af. kys brainlet

I am in college pre-calc, what Are you talking about, dud ?

>>11072590
When I took it it was Algebra for the first half of the semester and Trig for the second half

>>11072610
This >>11072820
You might have always just "got" many concepts in high school but that won't last forever. Eventually you're going to get to a stage where you're going to have to really practice and reflect on a concept a lot before you finally get it. You might even need to have someone else who gets it do their best to explain it to you a few times and go over examples and practice questions with you. There is nothing wrong with saying you don't understand something and looking for help.

>>11072610
i failed high school maths. you can do it anon

>havent even opened my book for Differential Equations yet
>test is in a week
How do you even muster the energy to do this shit, i feel tired after even one problem

>>11072572
Welcome to CS

>>11073292
I cant ask for help. Going to a tutor or office hours makes me feel like a retard, its impossible

>>11072572
Get a load of this faggot

>>11072590
Everything that has to do with functions and is easier than limits 101.

>>11072920
Unironically this.
Analytic geometry feels like witchcraft because of its counterintuitive way of handling curves and tangents, and all the sine and cosine shit feels like the result of messing too much around with degrees instead of just using rational fractions.
fuck the babylonians/indians and fuck descartes.

>>11073639
Limits by definition, chain rule, and the fundamental theorem of calculus are all easier than College Algebra or Analytic Geometry.

>>11072572
just study harder

>>11073660
agreed, hardest part about basic calculus is the algebra if you can't use a calculator

>>11073322
You are supposed to memorize the steps the instructor uses to solve the problem, so you don’t have to pump much effort in

Maybe it's because I'm retarded or autistic, but I feel like proofs in mathematics, infinite series, and so-called mathematical "induction" are examples of deductive reasoning that can only demonstrate relations between particular propositions or arguments as shown in specific cases, as opposed to trully discovering what a "thing" trully is in-itself.
Anything which atttempts to describe a totality of beings or a universal truth regarding everything which is contained within something may only be said to be an approximation or guess, lest it be a finite set whose members are all known about.

>>11073690
this nigga be paraphrasing first cringe kant on /sci/. epic cringe bro

>>11072590
Usually for people who fucked up in highschool. Usually, they give "precalculus" for the first week of calc1, but for extreme brainlets they dedicate an entire class. Its basically basic algebra followed by functions and trig stuff. Its just the basics needed to understand and work calculus problems.

OP, just at least get a 60. It's probably not highly credited and theres no need to blow your brains out or worry about it too much, it will only make it worse. Just make sure you do all of the problems given and that you understand everything.

For the bad news, usually they hold your hand pretty well for precalculus. And the problems are similar to practices. In actual calculus classes, the problems on exams will be much harder and some of them you will have not seen a problem very similar before. Get your shit together fast.

>>11072610
Only encouragement I can give you is that I know quite a few brainlets who did good in college through sheer work. This includes pajeets who got through by doing literally every single problem set available, and also a girl who struggled to get a mere 76% in calculus 1 who became a doctor, in a fairly competitive place.

If pajeets and women can do it, you sure can. Just get the help you need, get medicated if necessary, and if all else fails, become humanities undergraduate and start doing drugs.

>>11072572
might i suggest becoming a business major?

>>11073764
>humanities undergraduate and start doing drugs.
can recommend

>>11072572
take it again no biggy

>>11072610
get off the fuckin' internet and fuckin study. go over your lecture notes and make a list of things you don't understand, then on monday go to your professors office hours or go to your campuses tutoring group and get help.

Failing classes is a MASSIVE waste of time and money and completely unnecessary becasue college courses are designed for you to succeed.

I'm sure you know what you have to do to pass the class, you just don't want to do it.

>>11072586
when I took precalc it was basically advanced algebra and at the end of the semester you dabble in the basics of integration.

>>11073660
wtf is college algebra
it's fucking middle school algebra, whether you take it in middle school, high school, or college
college algebra is groups rings fields

BROS IM GONNA FAIL COLLEGE ARITHMETIC!!! AAAAAAHHHH HELP!!! HOW DO I ADD SINGLE DIGIT NUMBERS!!!!!

>>11072572
Get good skrub
f'(x) = x^3 - x^-1
f(x) = ?
f''(x) = ?
not hard

>>11073847
>wtf is college algebra
>proceeds to explain what college algebra is

>>11073681
My instuctor is a fucking pajeet who uses weird ass-backwards methods to solve shit and doesnt explain anything. I literally didnt even get told what differential equations was about until I googled it on khan academy. The only reason im passing this class is because im basically doing it solo without lectures.

>>11073989
f(x)= x^4

>>11074156
Bruh u just failed where tf is log|x|

>>11073847
You're thinking of abstract, you dumpling

Explain pic related, I'm mathematically retarded.

>>11072610
study up on your rules for algebra. If you can manipulate algebraic equations properly its ez pz. The problems you get in precalc are very mechanical, there's seriously hardly any thinking involved

>>11072920
yes

>>11073847
The kind of stuff that's in my College Algebra textbook are determinants, matrices, imaginary numbers, mathematical induction, polar coordinates, and infinite series. It's mostly stuff that's left out of high school-level Algebra over here in my shitty third world country (Mexico), and that sort of overlaps with Linear Algebra and Calculus.
The book we use is a translation of some old textbook written by an American college professor back in the 1960s, hence why it might not correspond to whatever undergraduate Mathematics students in America learn these days.

>>11074443
nobody calls algebra "abstract algebra" except engineers and high schoolers

>>11074732
There's more people out there with non-Mathematics-related degrees who never learned any Mathematics beyond Calculus than people who've taken Abstract Algebra classes.

>>11074751
sure, but there are more people who learn abstract algebra than there are that know of it and don't learn it

>>11074762
Nah, I'm pretty sure there's a fair number of people who know about Abstract Algebra through Youtube videos made by that kind of channels (y'know which ones I mean) that have mass appeal. For the average person, Abstract Algebra is one of those things (similar to what Hegel's writings would be to philosophy-oriented people) that only high IQ intellectuals are capable of handling.

>>11074482
Not sure why they wrote it out like that but

Q [math]\cdot[/math] 0.5 [math]\cdot[/math] 1.1 = (900,000 [math]\cdot[/math] 1.2) + (Q [math]\cdot[/math] 0.3)
0.55Q = 1,080,000 + 0.3Q
0.55Q - 0.3Q = 1,080,000
0.25Q = 1,080,000
Q = [math]\frac{1,080,000}{0.25}[/math]
Q = 4,320,000

>>11072590
something OP should have taken in middle school

>>11072572
I'm taking college precalculus and have a 96, I'm a midwit at best OP. Just study more.

>>11072583
>yikes
cracker

>>11072590
>>11072638
>>11072920
>>11073847
>>11074707
I'm in College Algebra currently. Despite being that "smart kid", I became a NEET and ended up dropping out so I didn't get past Algebra/Geometry.

My (community) college requires me to do:
College Algebra
Trigonometry
PreCalculus
Calculus I
Calculus II

pic related is the table of contents for my textbook.

My plan is to finish the book by the end of October, then do self study and test out of trig/precalculus.

>>11075340
Damn, those topics bring me back. But I wonder, historically, when did this become called Algebra? Because in Gauss' time, all of this was under "Arithmetic", and in today's time Algebra means something else. So where did the education system get the idea to name all of these things algebra? It's so bizarre that I do not know the story of how this happened despite having a degree in mathematics.

>>11074482
It's probably easier if you split it up into sections and just plug/chug. Hopefully this LaTeX works:

[eqn]
Q * \textbf{(0.5 * 1.1)} = 900000 * 1.2 + Q * 0.3
\newline
\textbf{(Q * 0.55)} = 900000 * 1.2 + Q * 0.3
\newline
0.55Q = \textbf{(900000 * 1.2)} + Q * 0.3
\newline
0.55Q = 1080000 + \textbf{(Q * 0.3)}
\newline
0.55Q = 1080000 + 0.3Q
\newline
\textbf{(0.55Q - 0.3Q)} = 1080000 + \textbf{(0.3Q - 0.3Q)}
\newline
0.25Q = 1080000
\newline
\bf{(0.25Q \div 0.25)} = \bf{(1080000 \div 0.25)}
\newline
Q = 4320000
[/eqn]

>>11074482
It's easier to split it up into sections and just plug/chug, going through the problem methodically. Hopefully this works:
[math]
Q * \textbf{(0.5 * 1.1)} = 900000 * 1.2 + Q * 0.3
\newline
\textbf{(Q * 0.55)} = 900000 * 1.2 + Q * 0.3
\newline
0.55Q = \textbf{(900000 * 1.2)} + Q * 0.3
\newline
0.55Q = 1080000 + \textbf{(Q * 0.3)}
\newline
0.55Q = 1080000 + 0.3Q
\newline
\textbf{(0.55Q - 0.3Q)} = 1080000 + \textbf{(0.3Q - 0.3Q)}
\newline
0.25Q = 1080000
\newline
\bf{(0.25Q \div 0.25)} = \bf{(1080000 \div 0.25)}
\newline
Q = 4320000
[/math]

>>11074482
It's easier to split it up into sections and just plug/chug, going through the problem methodically. Hopefully this works:
[math]
Q * \textbf{(0.5 * 1.1)} = 900000 * 1.2 + Q * 0.3

\textbf{(Q * 0.55)} = 900000 * 1.2 + Q * 0.3

0.55Q = \textbf{(900000 * 1.2)} + Q * 0.3

0.55Q = 1080000 + \textbf{(Q * 0.3)}

0.55Q = 1080000 + 0.3Q

\textbf{(0.55Q - 0.3Q)} = 1080000 + \textbf{(0.3Q - 0.3Q)}

0.25Q = 1080000

\bf{(0.25Q \div 0.25)} = \bf{(1080000 \div 0.25)}

Q = 4320000
[/math]

Goddamn the latex support here is awful

>>11075384
fuck it I give up

>>11072572
>precalculus
>college
kek that's fifth grade shit

i'm sorry to hear that, anon
best wishes on the next go-round

>>11072590
code for elementary algebra, expect it should cover all elementary functions.
I don't know why OP called it "college" precalc, because that just means it's precalc but in a college. which is meaningless because it's the same material as if it were taught in a middle school, which is were it is usually taught. I mean impinge if it actually took people 8 years to learn precalculus and 4 to learn a cusp of elementary algebra.
that's a laugh, because there is no such thing as a place that retared, I doubt even the Americans are that dysfunctional.
>>11072572
read axler, the book is a perfect review.
oh yeah, and turn in your fucking homework you degenerate
>>11072638
>you should know calculus to take calculus
what a fucking retard you are.
I know some of you engies think calculus is hard but honestly one should just skim through a simple equation sheet with minor notes and go right to analysis.
>>11072920
>algebra related to circles is harder than algebra relating to average rate of change
this is why I don't visit this board daily anymore.
still funny to see the smooth brains. in fact this is the only reason I come here at all. If I wanted a intriguing conversation I'd talk to my professors or my peers.
>>11073186
based
>>11073072
honesty is the best policy
>>11073322
just pick five and do them, not that hard.
>>11073851
read analysis 1 by terry tao, you'll thank me later.
>>11075340
>testing out
always best.
why even fuck take a class if you already know the material.

>>11076205
>I don't know why OP called it "college" precalc, because that just means it's precalc but in a college. which is meaningless because it's the same material as if it were taught in a middle school, which is were it is usually taught.
do you honestly expect me to believe they taught binomial expansion in your standard placement public middle school?

>can get right answers in math
>extremely slow
>perfectionist
I am destined for failure

>pajeet professor
>unintelligible
>hes the only professor and this the only class on campus
Do i just give up on my math major now or what

>>11075340
Literally all that shit is covered within the first 150 pages of my College Algebra textbook. Contemporary textbooks really are fucking terrible and full of filler, aren't they?

>>11076238
Not in middle school, but I remember being taught about binomial expansion to the second and third power in high school, even though I can't remember getting taught about the binomial theorem and Pascal's triangle till I took my College Algebra course, which couldn't have been done earlier on, since we'd never really seen taught about factorials prior to that.

Plugga bättre du skämmer ut ed

>>11075340
>Nonlinear functions
>Nonlinear systems
Oh, so that's where the "College" part of College Algebra is.

Is the nonlinear systems stuff in your textbook this sort of stuff over here
http://tutorial.math.lamar.edu/Classes/Alg/NonlinearSystems.aspx
or this
http://www.thermopedia.com/content/984/
?
If it's the latter, then I'm surprised it'd pop up in what's supposed to be an elementary algebra-level textbook. If it's the former, I feel like it should've appeared earlier on.

>>11076612
I'm not sure desu. My College Algebra class is only going to 9.4

>>11077308
Do you know if you're at least gonna see Conics in some other class?
For me, conics were helladang difficult when I first saw them in Analytic Geometry (especially problems about finding circles inscribed inside of parabolas, or finding lines that are tangent to an ellipse and that touch some other point), but it's possible to get through them by brute forcing them, and also attempting to work your way backwards through problem solutions, theorems, etc.
One thing that my experiences with language learning taught me that translates quite well over to mathematics is that doing or at least seeing something very often (like, at least every 2 days) is more important than doing the same thing many times in a row.

>>11072572
> college
> precalc

>>11077630
I once met a Theology major who got accepted for some reason or another, and claimed he got extremely high points on the reading sections of the entry exam, but was so bad at math that he had to take remedial Algebra classes.
This was in a top 20 university in a third world world country btw.

>>11077727
a 3rd world countries top 20 university... sounds pretty shit

>>11072572
Precalculus is genuinely harder than Calculus.

>>11077733
At least it's Mexico and not Burundi

how the fuck am I supposed to pass all these hard as fuck math classes AND do the other classes for my degree (CS)?

>>11077918
Any good College Algebra book will introduce you to everything from addition and substraction to combinatronics and infinite series. It shouldn't take more than 6 months to get through all of that.

>>11077952
>combinatronics
*Combinatorics

>>11076238
>his school mates couldn't handle a simple algorithm.
you're right they didn't but they did have a library near by where I would hang out as my mom would get drunk with allen and they'd hang out all night, and until the morning, as I'd walk myself to school.
so yeah mate, sorry I knew how to read.
in high school I got a laptop from my uncle for classes, I started downloading pdfs of textbooks.
OHHH NOOO HURRR DURR READING TOO HARD MAN ME NO LIKEY
>>11076472
libgen, become familiar with it.
>>11076597
>hurr durr americans are too stupid to understand n*(n-1)*...
nice.
>>11077952
lang

>>11077952
retarded newfag

>>11078352
Lang is a meme and is fucking terrible.

>>11078352
you sound insufferable

>>11073764
Arent pajeets as smart as chinks? I always thought of them as smart but it could just be the work ethic

>>11078352
You're so fucking pretentious, it's hilarious. You don't even sound cocky or arrogant, but as if you were trying too hard to act like the smartass you aren't. The funniest thing is that guys like you are never hot shit. You're probably an undergrad student in some B tier school without many significant achievements, but still you spend your free time trying to shit on strangers in a mongoloid cartoon imageboard by pretending that everything is soooo easy to you. I'm not even mad at you, anon. I pity you.

>Failing precalc
Just quit STEM at this point la
This shit ain't for mouthbreathing brainlets

>>11072572
You can make more money as a plumber. Not to worry.

>>11072572
>I'M GOING TO FAIL COLLEGE PRECALCULUS
I failed it 4 times. It's easier the 5th time

>>11078524
based idiot

>>11078549
based reply

>>11072590
It's where you learn the unit circle.
Honestly can't be bothered to remember much else of it.

>>11074220
its not log x its ln|x|, brainlet.

>>11072590
When you just start doing math, and some numbers start to come out, but its just a little bit and you still keep going.

>>11079040
log usually means natural log when the base isn't specified

>>11073322
>test is only going to be second order ODEs with complex roots
i-is this cheating? It can't be this easy

>>11077401
you see them again in multivariable calc but in 3d

>>11079040
>>11079080
log means natural log in pure math contexts, base 10 in many engineering contexts, and sometimes base 2. it's clear the pure math standard is better but the reality is that log often means base 10

>>11079118
Just use natural log and stop giving me aids.

>>11077743
This

>>11077743
that's not even possible considering you need precalc for calculus
also precalc is easy as fuck. I didn't even need to study and was stoned for every lecture

>>11073229
Nvm just had another practice lesson I'am brainlet too

>>11072572
kindergarten math

lel>>11079998

>>11078380
I happen to have no clue what you are talking about. Basic math by lang, how to solve it, then analysis 1 by terry tao, this is just correct.
>>11078386
no, I write with an insufferable tone. I sound great.
>>11078440
lol, you're funny anon. You'd make a good girlfriend, I'm doing auditions btw ;)
pity me harder cutie
>>11078446
no he just needs to pass and that's enough for being a code monkey.
they are like accountants but worse, adding numbers all day but sat alone at lunch in high school
wait no that was me...im a math major. :(
>>11078524
learning from your failures, signs of a true genius. Best to be wrong faster to correct yourself sooner.

>>11081668
desu if all you do with your cs degree is some full-stack meme job you're a failure as that is so beneath the knowledge you acquire in a CS degree.

>>11073690
>Maybe it's because I'm retarded or autistic, but I feel like proofs in mathematics, infinite series, and so-called mathematical "induction" are examples of deductive reasoning that can only demonstrate relations between particular propositions or arguments as shown in specific cases, as opposed to trully discovering what a "thing" trully is in-itself.

I think it's the former, you're retarded.

>>11072572
Check out Sheldon Axler's book on precalc.

>>11072572
Are you using velcro instead of shoelaces? Do you wear a helmet when outside? Are you allowed near sharp objects?

same here brother. Brainlet unite

>>11072572

I’m taking precalc to but have a 70%. I still have a chance right? I’m still new to this college thing.

>>11072572
kek
why do these retards overhype calculus? seriously it is so ridiculous

>>11083286
Calculus is one of the hardest classes an undergrad can take, retard

Math 55 at Harvard is the hardest math class ever made and it's calculus.

>>11083289
>Calculus is one of the hardest classes an undergrad can take,
according to social studies students?

>>11074732
At my school the course is called abstract algebra

>>11072572
Your own fault for not taking precalc until college.

>>11072572
how do you even fail college pre-calc?

>College precalculus
Those two words have no right to be in the same sentence.

>>11083289
>Math 55 at Harvard is the hardest math class ever made and it's calculus.
Math 55 is LA, Real & Complex Analysis, Group Theory, Topology and some other topic depending on who's teaching the class.

I think I nearly failed precalculus once as a sophomore in high school, but even then it was like only a C- not technically failing. I had to kick it into gear when I did Calculus my Junior year of HS. Why are you even taking these in College, it is meant for children in high school. When you arrive at college you shouldn't be doing Calc at all. Maybe multivariable calc would be reasonable but they offered that in HS as well so it is still kind of cringe to be taking courses like this at Uni.

>>11073358
>going to a tutor or office hours makes me feel like a retard
You’re never going to make it. It has nothing to do with your intellectual capabilities. It has to do with your character. I went to office hours from calc 1 to algebraic topology. Lose your shame and ask your questions

>>11078431
Pajeets are smart, especially American born south Asians, and represented in stem because of particular cultural pushes. It’s that they’re mixed in with not so smart people, just like any other population

>>11085566
This. My ego can go suck a chode I need to actually learn shiz

>>11084327
Any info on the class that's available online?

>>11072572
>be me
>brainlet in math
>manage to pass pre-cal subjects even though learning nothing in senior high
>having thoughts what to take in college
>med, compsci, or eng
>be a dumbfuck and chose engineering
>already a 2nd year
>an irreg since I failed calculus
Fuck me

Some anon said in an another thread that its more effective to study analysis first then study calculus
Can anyone confirm?

>>11086971
yeah I'm that guy, probably, I mean I do say that a lot.
proof? you don't actually need to know calculus, which if you knew what the word calculus meant you'd have a different opinion, to know analysis.
If you're not an engineer you're wasting your time, just look at a formula sheet and be done with all of calculus.
get to the real shit.
Apostol is a good stepping stone. There are better books, MUCH better, but I need not enrage the rudin/apostol whiners.
>>11086957
Oh anon, there are better cash careers which require much less.
But you don't seem like the intelligent type so I won't hold it against you

>only got an 85 on my midterm
THERE GOES MY GPA

This thread was moved to >>>/r9k/55023596