1.

Let f(x) = (sqrt(x - 2 sqrt(x - 1)))/(sqrt(x - 1) - 1)x, then

Answer»

`f'(10) = 1`
`f'(3//2) =-1`
DOMAIN of `f(x) ` is `x GE 1`
RANGE of `f(x) ` is `(-2, -1] uu (2, oo)`

Answer :A::B::D


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