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10x9+10xloge10x10+10xdx is equal to

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a
10x+x10+C
b
10x-x10+C
c
10x−x10−1+C
d
log⁡10x+x10+C

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detailed solution

Correct option is D

∫10x9+10xloge⁡10x10+10xdxLet x10+10x=t⇒10x9+10xloge⁡10dx=dt⇒ dx=dt10x9+10xloge⁡10∴ ∫10x9+10xloge⁡10x10+10xdx=∫10x9+10xloge⁡10t×dt10x2+10xloge⁡10=∫dtt=log⁡|t|+C=log⁡10x+x10+C


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