Question

y=cos2u u=3x+1 find derivative

Answer 1

chain rule

Answer 2

\[\frac{dy}{dx}=\frac{dy}{du}\times \frac{du}{dx}\]

Answer 3

Its An Easy Question First Differentiate both with respect to u ^^

Answer 4

\[\frac{dy}{du}=-\cos(u)\] and \[\frac{du}{dx}=3\]

Answer 5

oops
\[\frac{dy}{du}=-\sin(x)\]

Answer 6

-6sinx