Question
Find the indicated limit, if it exists.$\lim _{x \rightarrow 4} \frac{x-4}{\sqrt{x}-2}$Hint: See Exercise 59 .
Step 1
Step 1: Try direct substitution If we try to directly substitute x = 4 into the expression, we get: $\frac{4-4}{\sqrt{4}-2} = \frac{0}{0}$ This is an indeterminate form, so we need to try a different approach. Show more…
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