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## Homework Statement

[tex]\lim_{x\rightarrow 4^{-}}\frac{\sqrt{x}-2}{x-4}[/tex]

Evaluate

## The Attempt at a Solution

Well, I used a calculator to substitute arbitrary values to see what it appears to approach.

input | output

2 .293

3 .268

3.5 .258

3.9 .252

So I concluded that the the limiting value is in fact .25.. and I was wrong. How do I evaluate this?

NOTE THAT WE ARE APPROACHING FROM THE LEFT!

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