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Mathematics 11 Online
OpenStudy (anonymous):

How many local maxima and minima does the polynomial y=x^4-9x^2+7 have? Please show work.

OpenStudy (anonymous):

1 max and two min

OpenStudy (anonymous):

do you understand why?

OpenStudy (anonymous):

set the derivative of the function equal to zero. we have 3 solutions to 4x^3-18x. They are the local extrema

OpenStudy (anonymous):

what is the derivative of the function?

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