Question

@hartnn

Answer 1

chain rule

Answer 2

2sin(x) + 2cos(x)
right?

Answer 3

no

Answer 4

anyways sin^2 x+ cos^2 x is = 1
!

Answer 5

\[y=\sin ^2x+\cos ^2x=1,\frac{ dy }{ dx }=0\]
or \[\frac{ dy }{ dx }=2 \sin x \cos x+2\cos x(-\sin x)=0\]

Answer 6

so, derivative of 1 is ??

Answer 7

0(:

Answer 8

yes