If f is a differentialbe function, find an expression for the derivative of each of the following function :
a) y= (x^2)f(x)
b) y=(x^2)/f(x)
c) y=(1+xf(x))/(x^(1/2))
You can use the product rule for the first, the quotient rule for the second, and a combination of the two for the third. Here is the first:
1) y = (x^2)*f(x)
y' = (2x)*f(x) + (x^2)*f '(x)
(I made the space so you could tell it was the derivative) I would do the others, but I don't have the time. I hope this helps, though.