Question

$\frac{d}{dx}$ ($sin^{4} x$)

Answer 1

$sin^{4}$x can be written as $(sinx)^{4}$ hence when we differentiate wrt x we can consider the whole function as $x^{4}$

Thus d/dx($(sinx)^{4}$=4$(sinx)^{3}$×d/dx(sinx)

=4$(sinx)^{3}$×cosx