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# Integration help watch

1. 1 / (1-x^2)

Firstly I expressed the above as a partial fraction.

0.5/(1-x) + 0.5/(1+x)

Integrate the above to get

0.5ln(1-x) + 0.5ln(1+x)

where did I go wrong?
2. (Original post by khanpatel321)
1 / (1-x^2)

Firstly I expressed the above as a partial fraction.

0.5/(1-x) + 0.5/(1+x)

Integrate the above to get

0.5ln(1-x) + 0.5ln(1+x)

where did I go wrong?
missed a minus in the first lump
3. (Original post by TeeEm)
missed a minus in the first lump
A=0.5 B=0.5?
4. (Original post by khanpatel321)
A=0.5 B=0.5?
no

1/(1-x) integrates to -ln|1-x|
5. (Original post by TeeEm)
no

1/(1-x) integrates to -ln|1-x|

0.5ln(1+x) - 0.5ln(1-x) ?
6. (Original post by khanpatel321)

0.5ln(1+x) - 0.5ln(1-x) ?
clearly
7. (Original post by TeeEm)
clearly
Thank you
8. (Original post by khanpatel321)
Thank you
no worries

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