Question: 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 ER} b) {xx 0,

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

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 ER} b) {xx 0, x = R} c) {x/x

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