/sci/ - Science & Math

eight and eight went out the door and came back in with 64.

My teacher would humm "pi dee pi dee piiiiii dee" while making circle motions with her arms to remind us the circumference of a circle I guess.

>>11977712
SOHCAHTOA is the only one I can remember to be honest.

My favourite is:

>Three point one four one five nine two six five three five eight nine seven nine three two three eight four six two six four three three eight three two seven nine five zero two eight eight four one nine seven one six nine three nine nine three seven five one zero five eight two zero

It's how I remember the first few digits of pi.

>>11977712
>>11977895
This because I can't be assed to remember basic trig so I just rely on mnemonics

Just Foil, pemdas (please excuse my dear aunt sally), and sohcahtoa like the other anon said. Other than that it was just memorizing formulas. Guess the quadratic formula "song" really stuck with me too. Man, what a stupid way to learn rather then just understanding intuitively.

u v minus integral of u dash v

The fun part of mathematics is that you DON'T need mnemonics, only to know certain axioms and markings and derive the rest.

>>11977712
I didn't use any mnemonics for actual school maths because I'm not a brainlet, but I do remember one useless meme trick that to multiply any 2-digit number by 11, you just add the two digits together and shove the result in the middle
i.e.
11x34=3 [3+4=7] 4= 374
11x72= 7 [7+2=9] 2= 792
11x93= 9 [9+3=12] 3 = 1023
It's useless because it's easier to just multiply by 10 and then add one more, but still interesting how that works

>>11978444
I think that math trick is more useful for understanding how cryptography works. Cool meme

>>11977712
W pierwszej ćwiartce wszystkie są dodatnie, w drugiej tylko sinus, w trzeciej tangens i kotangens, w czwartej cosinus.

>>11977895
came here to post SOHCAHTOA and its cousin CHOSHACAO

>>11978472
>useful for understanding how cryptography works
how so?
i'm a medfag so i don't know high-level applied maths

>>11977895
always remember that because I was big into bionicles

>>11977895
This and the 9 table finger trick

>>11977712
Well, you didn't exactly say it had to be a good mnemonic.
>5th grade or something
>get confused with dependent probability question
>rationalize that all probability is "it does or it doesn't so 1/2"
>unironically think this way for most probability problems until highschool

>>11978543
to
also
"Na ekierce siedzi wrona" -> N, E, S, W

>>11977895
for me, it's "Some Old Hippie Caught Another Hippie Tripping on Acid"

>>11977895
i remember our variant was CAHSOHTOA which sounds a bit like "casse toi", which mean fuck off in french

Old Hari
And His
Old Aunt

pemdas

FOIL first outer inner last

>>11978869
is that the one where you multiply by 10 then subtract the number?
I do it that way

>[math]x\cdot 9[/math]
[math]x\cdot 10 - x[/math]
>[math]7\cdot 6[/math]
7 14 21 times two is 42
>7x8
memorized as 5678
>squares
memorized

now my dirty secret is that I have not memorized anything else
or rather I know the sequences. I do not know what 7x5 is for instance.
Sometimes I start at 25 and then do two more fives for 35
other times I go 7 14 21 28 35 in my head

basically everything is such a sequence
8x6 is 8 16 24 *2 -> 48

if the numbers are larger than 10 I might drop my sequences and instead start looking for factors or multiplying by the closest 10th and subtracting or something like that though.
But still, [math]13*17 = 13*20 - x = 13*10*2 - x = 260 - 13*3 = 260 - 13 - 13 - 13[/math]

t. studying stats

>>11977919
now this is autism

>>11982898
>>x⋅9x⋅9
>x⋅10−x
my nigga

>I ate and I ate until I was sick on the floor
13 syllables
>eight times eight is sixty-four
6 syllables
are you retarded?

The digits of pi sung to the first verse of "Seasons of Love". I guess it was just an earworm I picked up on the radio:

>three point one four one five nine two six five three five
>eight nine seven nine three two three eight six
>two six four three three eight three two seven nine
>uhhhh

couldn't even complete the verse

>>11977712
For me it was
>8 times 8 is 64, shut your mouth, say no more
I grew up in Quincy, so that was probably the most tame language I was exposed to in a given day.

8 mau 8 git 64 schiss id hose links und rächts.

Swiss mnemonic for 8x8 I'm not kidding you. Translation: 8 times 8 is 64 shit in your pants left and right.

>>11977895
this
I still use it on the rare occasions I need trig

this and >>11977895

"que j'aime à faire apprendre un nombre utile et sage" for the first digits of pi

>>11983707
Math teacher would make fun of us if he caught us using it in a test, called it "three fingers in the ass". He didn't like mnemonics.

>>11983768
makes no sense
q=quattre
j=1???
a= 1???
also where is cinque?

>>11983785
Number of letters in each word.
"Que" = 3
"j'" = 1
"aime" = 4
And so on

>>11983768
I feel like just memorizing the numbers would be easier but who am I to judge

>>11977712
8 times 7 is 6 after 5

u dv = ultraviolet super voodoo

>>11977712
12x12=144 and that's the highest multiplication, that's all you need

Feel like reading any of these will just make you retarded.

>>11984533
do americans really??

>>11977762
Yes, until I enrolled into a statistics class.

>>11977712

Sine: "Oh!"
Cosine: "Ah!"
Tangent: "Oh! Ah!"