Question

Find the Derivative of f(x)=3x^2 at x=3

Answer 1

f'(x) = 18

Explanation:

f(x) = 3x^2

f'(x) = 3 * d/dx (x^2)

f'(x) = 3 * 2x

f'(x) = 6x

Evaluate at 3

f'(3) = 6*3

=18