1. y = (x^2 + 1)^3 * (x^3 - 1)^2

2. y = (x^3 + 1) / (x^3 - 2)

3. y = x^2 * sqrt(x + 1)

4. find dy/dx and d^2y/dx^2 for x^(1/3) + y^(1/3) = 3 at the point P(1,8)

If you could briefly explain the methods that would be great too. These are the only ones I am stuck on...thanks1