f(x) = -x2 + 4x + 9 assumes its maximum value for which value of x

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Guest Jul 16, 2014

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Best Answer

For a general quadratic of the form a*x² + b*x + c the maximum (or minimum) occurs at x = -b/(2a). In this case that is -4/(-2) = 2.

Alan Jul 17, 2014

Alan · Answer 1 · 2014-07-17T07:20:57

For a general quadratic of the form a*x² + b*x + c the maximum (or minimum) occurs at x = -b/(2a). In this case that is -4/(-2) = 2.

Guest · Answer 2 · 2014-07-16T11:07:30

equation for this function is f(x) = -x^2 + 4x + 9 assumes its maximum value for which value of x

DragonSlayer554 · Answer 3 · 2014-07-16T11:08:41

I checked it on the calculator and the answer is x=((x2f(x)-9)/4)

Guest · Answer 4 · 2014-07-17T01:43:56

there is an error in the original question

should be

-x^2 + 4x + 9 assumes its maximum value for which value of x

where -x squared + 4x + 9