<Solved>When to use the F(b)-F(a) formula in definite integrals?

Dec 2019
3
1
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I'm trying to solve this formula:

I wrote this:
F(1)-F(-1)=0-2/1/(3+3)=-3/5
But then I was told I should split the formula.I know it makes the solution easier because
is odd.But I don't see why it's necessary.
Why is that?
And the other half is written as:

Why can't we write:F(1)-F(-1)=0 ?
(Sorry for bad English)
 

skipjack

Forum Staff
Dec 2006
21,321
2,386
What function were you using for F($x$)? I can suggest a suitable function if you wish, as you don't seem to have found one. If you found your mistake, we'd still like to check your work for you, now that you've posted the integral.
 
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