a) y = (cscx)(cotx) b) y = x^2 + e^(2x)
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)
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