Question

diffrentation cos3x

Answer 1

the derivative of cosine is minus sine

Answer 2

so the derivative of
\[\cos(3x)\] is
\[-3\sin(3x)\] by the chain rule

Answer 3

got it or u need explanation

Answer 4

how about sin^3x

Answer 5

derivative of sin is cos

Answer 6

\[\huge \sin^3 x=(\sin x)^3\]
Use the chain rule.
\[\huge (\sin x)^3=3(\cos x)(\sin x)^{3-1}\]
\[\huge =3(\cos x)(\sin x)^{2}\]

Answer 7

never mind he got it

Answer 8

\[\sin^3(x)=(\sin(x))^3\] so by the chain rule you would get
\[3(\sin(x))^2\cos(x)\]

Answer 9

thank U @satellite73 @Azteck