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Question

The value if the integral
21ex(logex+x+1x)dx is

A
e2(1+loge2)
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B
e2e
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C
e2(1+loge2)e
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D
e2e(1+loge2)
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Solution

The correct option is A e2(1+loge2)e
Let
I=21ex(logex+x+1x)dx

I=21exlogex+ex+exxdx

I=21exlogexdx+21exdx+21exxdx

21exlogexdx+[ex]21+[exlogex]2121exlogexdx

I=(e2e1)+(e2loge20)

=e2(1+loge2)e

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