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Question

The area of the figure bounded by the curves y=ln x and y=(ln x)2 is


A

e+1

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B

e1

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C

3e

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D

1

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Solution

The correct option is C

3e


A=e1(ln x(ln x)2) dx ln dx=x ln xx

A=(x ln xx)|e1[ln x(x ln xx)|e1e1(ln x1)]

A=[x ln xxx(ln x)2+x ln x+x ln xxx]e1

A=[x(ln x)2+3x ln x3x]e1

A=e+3e3e+3=3e


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