1.

Let f(x) = sqrt(x-1) + sqrt(x+ 24-10sqrt(x-1)),1 lt x lt 26 be real valued function. Then f'(x)for 1 lt x lt 26 is

Answer»

0
`(1)/( sqrt(x-1))`
`2 sqrt(x-1) -5`
5

Answer :A


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