Find where the function is increasing and decreasing for the function f(x) = x^3 + 3x^2 + 1

Answer 1

By definition, f(x) is increasing where f'(x) > 0 and decreasing where f'(x) < 0.

Have you tried finding f'(x)?

Answer 2

By definition, a function f(x) is increasing when f'(x) > 0.