/sci/ - Science & Math

How do I get good at drawing 3D shapes in a 3D coordinate plane? Are there any exercise sets or books I can try using to strengthen my 3D graphing skills (without using computer programs, of course)?

>>12217712
Oh and what's calc 4?

>>7706134
I thought I was getting pre-dementia in highschool but then I just realized that I was pretty farsighted when I went to the eye doctor and because the eyes compensate when you're young (& farsighted) I didn't recognize it as a refractive error. Now I just can't see shit.

What should I expect in undergrad physical chemistry as I'm taking it next sem?

>>6089440
If you replace "undefined" by "computation doesn't terminate" you'll see that you can't compute 0*1/0 unless you can compute 1/0

Both lambda terms and formulaes (eg in first order logic) have free/bound variables, alpha conversion and capture avoiding substitution. How do I generalise so I don't have to do the relevant work twice?

>>5483683
i hate homework threads as much as the next guy, but we shouldn't overreact when someone tries to post a legitimate thread about math.

>>5483698
why did you even bother replying?

>>5438017
Thanks

captcha: ertsYu humours

Junior EE from USA

If you aren't interested in understanding the physics and mathematics and are going into engineering, CHANGE! All your classmates will all be sliding through school, and if you actually have a passion for understanding the material you will easily make grades each semester. After a 1.8 GPA fall semester freshman year, got my shit together, and I love how I'm feeling now. Seriously, no better feeling than getting a 4.0.

>>5058100
can you send it to me? o.o

This fits my interests.

someone has also fucked with the aspect ratio on it, but it looks like an hbomb test.

10 pages the solar system? 1 page per planet, 1 page on the sun, 1 page on kuiper belt and ort cloud.

fuck this shit writes itself. all you need is Cosmos playing on your TV, an astronomy textbook, and at least 2 15mg tabs of adderall and you should be able to get this thing written in under 12 hours.

>>4566615
but if e=mc^2
and e=hf
hf=mc^2

m = hf/c^2 ?

>>4566552

but then you get 25% change of convergence.

where did the 50% go?

>>4566476
not sure if a joke about needing to see a doctor.

or someone who cant spell physicist

some guy hypothesised this already but I forgot his name

in short, yes according to classical physics.

No (sometimes) according to quantum.

I am already of the opinion that you shouldn't be allowed to use a piece of technology if you aren't in the slightest interested in how it works

>tfw age _ and all the older 4chan guys on omegle just disconnect you and you'll never find a mentor to assign you history, sci, philosophy and be friends with

I... would just integrate both p(x) and f(x) and divide by 2pi/3

p is a polynomial. Those are relatively easy to integrate.

and for f you even get the integral handed to you. you just have to confirm it by differentiating it.

Science can't explain everything, but if you chose to consider the questions science can't explain you get tarred and feathered and run out of /sci/-town.

http://en.wikipedia.org/wiki/Logaritm#Calculation

http://en.wikipedia.org/wiki/Taylor_series

>>4516943

A^c is the complement to A
i.e. A^c = {2,4}

Makes me think: Bullets carry relatively little force, but are still highly destructive. How do you quantify that?

Problem with stopping bullets, they will destroy anything they hit. I don't know how much better sloped armour works (which a sword might be used as).