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For what value of ‘a’ is the area of the...

For what value of ‘a’ is the area of the figure bounded by the lines `y= 1/x, y=1/(2x-1), x=2` and x = a equal to ln `4/sqrt(5)`?

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The correct Answer is:
`a = 8 or 2/5(6-sqrt(21))`
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MOTION-AREA UNDER THE CURVE-EXERCISE -3
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