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1dxx(logx2)(logx3) is equal to 

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a
loglogx+2logx+3+c
b
loglogx−log3logx−log2+c
c
loglogx−3logx−2+c
d
loglogx+3logx+2+c

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detailed solution

Correct option is C

Put log⁡x=u Then dxx=du Hence Given =∫dxx(log⁡x−2)(log⁡x−3)=∫duu−2u−3 Using partial fractions, 1(u−2)(u−3)=Au−2+Bu−31=Au−3+Bu−2 Put u=2⇒−1=A Put u=3⇒1=B=∫du(u−2)(u−3)=∫1u−3−1u−2du=log⁡(u−3)−log⁡(u−2)=log⁡u−3u−2+c=log⁡log⁡x−3log⁡x−2+c


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