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OpenStudy (anonymous):
1.The increasing interval(s) of y=x^2+4x-2 are? 2.The decreasing interval(s) of y=x^2+4x-2 are? 3.The decreasing intervals of y=x^3+2x-1 are?
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OpenStudy (junyang96):
Differentiate it and then find the critical points
OpenStudy (loser66):
Calculus or precalculus? if it is calculus, then do as @junyang96 suggested if it is precalculus, then draw the graph out and determine when it is up.
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