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January 31, 2015

January 31, 2015

Posted by **John** on Wednesday, May 11, 2011 at 11:12pm.

Is this true or false. I think it's false, but can someone explain to me why it's false.

- CALCULUS HELP PLEASE!! -
**Reiny**, Thursday, May 12, 2011 at 7:48amThe question is done correctly.

When you differentiate

-x^-1 you get x^-2

and all the arithmetic was done correctly.

If this an "area between curves" type, I have seen this before.

The function f(x) = 1/x^2 is discontinuous at x=0

so even though calculation-wise we come up with the answer above, it would be meaningless.

- CALCULUS HELP PLEASE!! -
**Mgraph**, Thursday, May 12, 2011 at 2:53pmThe answer is wrong because function x^(-2)>0 on [-2,2] except x=0 =>integral>0

This is Improper integral which is divergent.

x^(-1)-->infinity if x-->0

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