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/edu/ - Education

'The weapon of criticism cannot, of course, replace criticism of the weapon, material force must be overthrown by material force; but theory also becomes a material force as soon as it has gripped the masses.' - Karl Marx
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File: 1689347650052.jpg (865.93 KB, 2448x3264, IMG_20230714_091001_860~2.jpg)

 

Any explanation for why the function on the right is correct would be great

 

What did you get it from? I can't make sense of your scribbling.

 

>>19067
Tan^-1(y) = 2x + c

Wrong
(Tanx)/2 - c = y

Correct
Tan(2x+c) = y

 

If tan⁻¹(y)=2x+C, then you take the tan of both sides and get
tan(tan⁻¹(y))=tan(2x+C)
y=tan(2x+C)

 

>>19069
Thanks but I've never seen that property of trig in school or with the book I'm studying with any sources would be helpful

 


 

>>19071
Actually it's the very definition of inverse functions: https://en.wikipedia.org/wiki/Inverse_function#Definitions

 

bro graduated from a taco bell parking lot

 

>>19073
Yeah don't worry I'm well aware that education in NA sucks in comparison to most of the planet especially SEA and east asia

 

OP is acing differential equations without knowing basic algebra, I'm kind of jelly, it must take serious brains

 

>>19073
Rude.

 

>>19075
No
I've been doing algebra since I started calc, theres just a lot of new tricks and identities I only learned in the course that weren't introduced suring my time in hs. No this doesn't take any brains at all, I just spent god how many hours studying this and practicing over the course of several months.


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