ksw19372
antidiff
proving..



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ksw19372
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\[f(x)=\ln (x ^{2}+1), then f'(x)=\frac{ 2x }{ x^2 +1 }\]
use this fact to find an antiderivative of \[\frac{ (x+1)^1 }{ x^2 +1 }\]

Goten77
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dw:1358842187903:dw hmm let me think a min

Goten77
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dw:1358842446733:dw
tbh i dont think this 1 has a anti derivative

ksw19372
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sorry it is 2!

Goten77
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oh that changes a lot then

Goten77
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dw:1358842715117:dw

ksw19372
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are there all the infomations i have to give?

Goten77
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dw:1358842883107:dw

Goten77
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hmm i would use just the last 2 boxes... the other ones were kinda wrong since you forgot to mention the to the power of 2 part....