1. The problem statement, all variables and given/known data f(x)=-8x4-5x3 +3 for concavity and inflection points. 2. Relevant equations f(x)=-8x4-5x3 +3 f'(x)=-32x3-15x2 f''(x)=-96x2-30x 3. The attempt at a solution can someone explain to me what exactly Inflection Points are? is it like critical points for the first derivative but those are for the second one? i mean, making f''(x) = 0 and get 2 numbers and those are the Inflection Points?