I made the substitution: so

This got me the wrong answer (though my math may have been wrong), is this the correct substitution to make?

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- Sep 9th 2008, 08:18 PMsymstarPartial fraction with substitution

I made the substitution: so

This got me the wrong answer (though my math may have been wrong), is this the correct substitution to make? - Sep 9th 2008, 08:27 PMChris L T521
- Sep 9th 2008, 10:06 PMsymstar
Yes and from there I got:

So...

...and that doesn't seem to be leading to the correct answer, so I think I went wrong somewhere in there. - Sep 9th 2008, 10:13 PM11rdc11
I got A = 2 and B = -1

- Sep 9th 2008, 10:13 PMMoo
- Sep 9th 2008, 10:35 PM11rdc11
Another way to find A and B is

u = Au + A + Bu +2B

Now gather the coefficents for each power and make and equation, for example

1 = A + B for power of 1

0 = A + 2B for power of 0

Now you can use substitution or elimination to get your A and B values - Sep 10th 2008, 05:57 AMsymstar
Thanks for your help!

- Sep 10th 2008, 09:13 PMKrizalid
- Sep 10th 2008, 09:21 PMChris L T521