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1x+x5dx=f(x)+c, then the value of x4x+x5dx=

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a
logx-f(x)+c
b
f(x)+logx+c
c
f(x)-logx+c
d
None of these

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detailed solution

Correct option is A

∫x4x+x5dx     ​add & subtract 1 in the numerator​= ∫x4+1x+x5dx−  ∫1x+x5dx​ =∫1+x4x1+x4dx−∫1x+x5dx​=∫1xdx−∫1x+x5dx     ​=logx−fx+c      ​given ∫1x+x5dx=fx


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