Evaluate .
Hint
Direct substitution works fine here.
Answer
The limit as x approaches 3 from the left is 9.
What the difference between -1 and -1–? In this case, not much.
The limit as x approaches 1 from the left is 1.
This almost looks like the dreaded division by zero, but then it doesn't.
The limit as x approaches 3 from the left is 1.
Evaluate for the function .
We're approaching from the left, so ignore what's to the right.
The limit as x approaches 1 from the left is 0.
Don't let the g fool you, this limit works the same as every other one.
The limit as x approaches 2 from the left is 4.
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for the function 
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for the function 
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