Question 309248
problem: f(x)=-2*x^3-9*x^2+24*x+1
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Graph the equation:
{{{graph(400,300,-10,10,-120,20,-2x^3-9x^2+24x+1)}}}
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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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