Homework Help: Math(Please check)

Posted by Hannah on Saturday, April 2, 2011 at 4:44pm.

Find the x coordinates of all relative extreme points of
f(x)=1/4x^4 + 2/3x^3- 3/2x^2 + 4

f'(x)=x^3 + 2x^2 - 3x = 0

(x^2 + 3)(x-1) = 0

x=-3 x=1 x=0 Is this correct?

Math(Please check) - bobpursley, Saturday, April 2, 2011 at 5:06pm
I get when factoring

x(x^2+2x-3)
x(x+3)(x-1)=0
x=0;-3, 1 same end as you, but your work is wrong.
Math(Please check) - Hannah, Saturday, April 2, 2011 at 6:20pm
thank you

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