Find the local maxima and minima, and all the inflection points, of

y= 9x^4 − 11x^3 + 3x^2 + 1

how would i start off by doing this question? thank u

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- October 4th 2008, 11:50 PMjvignaciomaxima and minima questionFind the local maxima and minima, and all the inflection points, of

y= 9x^4 − 11x^3 + 3x^2 + 1

how would i start off by doing this question? thank u

- October 5th 2008, 12:00 AMmr fantastic

x-coordinates of local maxima and minima: Solve . Use the double derivative test (or the sign test) to determine the nature of the stationary points.

If you want NON-stationary points of inflection as well, solve . Points of inflection for y occur where has either a maximum or a minimum turning point.