(6a) (4 points) Differentiate the function f(r) = ³ sec(r). (6b) (4 points) Differentiate the function f(x) = 2x²+1 (6c) (4 points) Differentiate the function g(x) = [e+tan(z)]7. (6d) (4 points)

Differentiate the function (x) = ln(x²+x+10).