If f(x) =x2 +{1/(x-1)}-1, then which of the following is correct ?

A    f(0)= ∞

B    f(1) = - 1

C    f(1)=0

D    f(-1)= -1/2

Solution

Correct Answer: Option D

 

x2 +{1/(x-1)}-1

now,

f(-1) = (-1)2 +{1/(-1-1)}-1

        =  1 -(1/2) - 1

        = -(1/2)

 

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