In: Math
a) Find the intervals over which f is increasing or decreasing.
b) Find the local maximum and minimum values of f.
c) Find the concavity intervals and the inflection points.
a. ?(?) = 2x 3 + 3? 2 − 26?
b. ?(?) = 4x 3 + 3? 2 − 6? + 4
c. ?(?) = ? 4 − 2? 2 + 1