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Evaluate: lim(x rarr 1) (f(x)-f(1))/(x-1...

Evaluate: `lim_(x rarr 1) (f(x)-f(1))/(x-1), "where" f(x) = x^(2)-2x`.

A

-1

B

0

C

1

D

2

Text Solution

Verified by Experts

The correct Answer is:
B
Calculate f(1) substitute f(x) and f(1), factorise numerator, then cancel the common factor and substitute x = 1.
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