Partial Fractions

2009-05-20 2:27 am
express in partial fraction
(4x-7)/(x-2)^2
the answer is
1/(x-2)^2 + 1/(x-2)
why is that?
更新1:

sorry the answer is 1/(x-2)^2 + 4/(x-2)

回答 (2)

2009-05-20 2:41 am
✔ 最佳答案
As follows:

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2009-05-20 4:34 am
(4x-7)/(x-2)^2
=[4(x-2)+1]/(x-2)^2
=4(x-2)/(x-2)^2+1/(x-2)^2
=4/(x-2)+1/(x-2)^2


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