help in H2 maths

lavastar SG

find dy/dx if

a) f'(x) = sq root (X^2 - 1) and y=f(x^2)

b) f'(x) = cos(x^2) and y = f(2x divided by x+1)

[Note: f'(x) means differentiating f(x) 1 time]

Is it that this problem can only be solved by integration? cause i have not learned integration in h2 maths yet..

Any help please? Rolling Eyes

eagle SG

a)

so dy/dx = f'(x^2) * 2x using chain rule

b)
similar to a). You should be able to do now

lavastar SG

wow thats fast.. thank u..