Question

differentiate cos^2x + sin^2x + cotx

Answer 1

you can use the identity and direct write cos^2x + sin^2x =0
so, basically you are just differentiating 1+ cot x

Answer 2

*** cos^2x + sin^2x =1

Answer 3

Ah, I see. so the final answer is simply -csc^2x?

Answer 4

YES

Answer 5

Man, see. LIke I continued differentiating everything, and it could have simply been cleaned up with an identity. THAT IS FRUSTRATING.

Answer 6

don't , with enough practice, you'll be able to solve these mentally and correctly :)

Answer 7

Sigh, thanks. Almost done with this packet!

Answer 8

welcome ^_^