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AP Calculus BC/Unit 1: Limits and Continuity
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Limit by Rationalizing The Numerator

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What is the value of the following limit?

lim⁡x→4x−2x−4\lim_{x\to4} \frac{\sqrt{x}-2}{x-4}

x (\sqrt{x} - 2)/(x - 4)
3.9 0.249
4.0 undefined
4.1 0.251
A

Undefined

B

2/4

C

1/2

D

1/4

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