differentiate each function

a) y = (cscx)(cotx)

b) y = x^2 + e^(2x)

y = csc cot

y' = (-csc*cot) * cot - csc*csc^2
= -csc*cot^2 - csc^3
= -csc(csc^2+cot^2)

y = x^2+e^(2x)
y' = 2x + 2e^(2x)