find the intervals on which the function is increasind and decreasing

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Pvaqvz

Mathematics

Question Description

find the intervals on which the function is increasind and decreasing:

-3x squared + 18X + 81

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Explanation & Answer

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(-3x^2+18x+81)'=-6x+18

function increasing--derivative>0-- -6x+18>0, -6x>-18, x<3

function decreasing--derivative<0-- -6x+18<0, -6x<-18, x>3

increasing: (-infinity, 3)

decreasing: (3, infinity)

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Sngva Zraunm (1755)
Duke University

Anonymous
Really useful study material!

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