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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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