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Find All Critical Numbers for the Function $f ( x ) = \frac { x - 1 } { x + 1 }$

Question 47

Multiple Choice

Find all critical numbers for the function $f ( x ) = \frac { x - 1 } { x + 1 }$ .

A) 1
B) $- 1,1$
C) $1 , - 1 , - 2$
D) 0
E) $- 1$
F) 2
G) $1 , - 1,2$
,

H) No critical numbers

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