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AP® Calculus AB-BC

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Limit of a Function with Step Discontinuity Point

APCALC-MDGNEV

Compute the limit of the following function, $f(x)$ as it approaches $x\to 4$.

$$\lim_{ x \to 4 }\cfrac{|x-4|}{x-4}$$

A

$0$

B

$1$

C

$-1$

D

Nonexistent.