Consider the function f(x) = -2x³ + k, where k is a

Last updated: 8/13/2022

Consider the function f(x) = -2x³ + k, where k is a constant. Find the decreasing interval(s) of f(x). a) {x|x > 0, x ∈ R} b) {x|x ≠ 0, x ∈ R} c) {x|x < k, x ∈ R} d) {x|x < 0, x ∈ R}