Precalculus Examples
,
Step 1
Consider the difference quotient formula.
Step 2
Evaluate the function at .
Replace the variable with in the expression.
Simplify the result.
Remove parentheses.
The final answer is .
Find the components of the definition.
Step 3
Plug in the components.
Step 4
Simplify the numerator.
Subtract from .
Add and .
Rewrite the expression.
Step 5