Hard differentiation problem

[tandoorichicken]

If \frac{\,df(x)}{\,dx} = g(x) and \frac{\,dg(x)}{\,dx} = f(x^2)
Then what is \frac{\,d^2f(x^3)}{\,dx^2} ?

[himanshu121]

differentiate \frac{\,df(x)}{\,dx} = g(x)
u will get \frac{\,d^2f(x)}{\,dx^2}=\frac{dg(x)}{dx}=f(x^2)

Is this enough