SOLUTION: problem: f(x)=-2*x^3-9*x^2+24*x+1 I'm trying to find out how to determine the interval on which funtion increases and decreases, and how to determine the local minima and local

SOLUTION: problem: f(x)=-2x^3-9x^2+24*x+1 I'm trying to find out how to determine the interval on which funtion increases and decreases, and how to determine the local minima and local

Question 309248: problem: f(x)=-2*x^3-9*x^2+24*x+1
I'm trying to find out how to determine the interval on which funtion increases and decreases, and how to determine the local minima and local maxima
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
problem: f(x)=-2*x^3-9*x^2+24*x+1
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Graph the equation:

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Comments: The methods for this problem depend on whether
you are taking calculus or college algebra.
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Just using a graphing calculator you can get the following answers:
I'm trying to find out how to determine the interval on which function
increases: (-4,1)
decreases: (-inf,-4)U(1,+inf)
and how to determine the
local minima: (-4,-111)
local maxima: (1,14)
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Cheers,
Stan H.
==========================

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