$f'(x) = 15x^2$
Work Step by Step
$f(x) = 5x^3$ $f'(x) = 5 \times (x^3)'$ $(x^3)'=3x^2$ Therefore $f'(x) = 5 \times (x^3)'= 5\times3x^2 = 15x^2$
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.