Precalculus Examples

Write as an equation.
Interchange the variables.
Solve for .
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Rewrite the equation as .
Subtract from both sides of the equation.
Replace the with to show the final answer.
Verify if is the inverse of .
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To verify the inverse, check if and .
Evaluate .
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Set up the composite result function.
Evaluate by substituting in the value of into .
Combine the opposite terms in .
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Subtract from .
Add and .
Evaluate .
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Set up the composite result function.
Evaluate by substituting in the value of into .
Combine the opposite terms in .
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Add and .
Add and .
Since and , then is the inverse of .
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