1.Given y=f(u) and u=g(x), find dy/dx=f'(g(x))g'(x). y=tan u, u=-9x+13

3.Use implicit differentiation to find dy/dx. x=sec(4y)

4.Write the function in the form y=f(u) and u=g(x). Then find dy/dx as a function of x. y=cot(6x- 6)

5.Find dy/dt. y=t⁷(t⁵- 6)³