Lagranges theorem Q.9(i)


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f’(c) =(1/2) 1/ (c+2)^1/2
find f(6) and f(4) solve for c

@Sunit please solve I'm not getting it!

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Kindly provide straight image .
Kindly provide answer

Check answers!

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Didn't squared the deno .. solved in a hurry so got it wrong..