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If Rolle's theorems applicable to the fu...

If Rolle's theorems applicable to the function `f(x)=ln x/x, (x> 0)` over the interval `[a, b]` where `a in I, b in I` ,then value of `a^2+ b^2` can be:

A

`20`

B

`25`

C

`45`

D

`10`

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The correct Answer is:
A
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