Ok I have to identify the extram i.e.the maximum and minimum points of this function and...i'm kinda confused

Thats what i got for my derivative so i just factor out numerator and denominator right?

To get:

as my zeroes

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- Jun 5th 2011, 02:42 PMpurplec16Applications of Derivatives
Ok I have to identify the extram i.e.the maximum and minimum points of this function and...i'm kinda confused

Thats what i got for my derivative so i just factor out numerator and denominator right?

To get:

as my zeroes - Jun 5th 2011, 02:57 PMskeeter
ok ... solve for x in each case to determine critical values.

Now what? ... btw, pay attention to the domain of the original function. - Jun 5th 2011, 03:02 PMpurplec16
for the numerator i got and the denominator

but how u solved the numerator i thought if you can't factor of x's you would just say

and then solve from there - Jun 6th 2011, 05:55 AMskeeter
- Jun 6th 2011, 07:17 AMmrfour44
Remember! Division by zero is not defined.

skeeter got the roots excluding and by separating the contents using the formula for the difference of two squares,

that is , just as he had written, because .

Now, considering that division by zero isn't defined, what has to be zero for the fraction to equal zero?