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Given Im=1e(logx)mdx, If ImK+Im2L= e then values of K and L are

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a
1−m,1m
b
11−m,m
c
11−m,m(m−2)m−1
d
mm−1,m−2

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detailed solution

Correct option is A

Im=∫1e (log⁡x)mdx=x(log⁡x)m1e−m∫1e (log⁡x)m−1dx=e−mx(log⁡x)m−11e−(m−1)∫1e (log⁡x)m−2dx=e−me+m(m−1)Im−2=(1−m)e+m(m−1)Im−2So Im1−m+mIm−2=e. Thus K=1−m and L=1m.


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