suju101
solve this to get find global extreme values:
f(x)=x^48x^2+4x+2 at [(20/25),(64/25)]



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TuringTest
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Why do you specify a point?

imranmeah91
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is that range?

suju101
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yep!! extrema values fall in the range so it is specified.

TuringTest
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can't solve the cubic is all?

imranmeah91
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find criticle points
check criticle points and boundary points

suju101
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i know that but i couldn't solve the equation

imranmeah91
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D[x^48x^2+4x+2 ]>= 4x^3 16x+4=0


suju101
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and how to solve that eqn to get value of x

sam_unleashed
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x^34x+1=0...then..
main problem is , to solve for x...

suju101
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@sam yes