To find: whose statement is correct.
Answer to Problem 5CFU
Rosalinda
Explanation of Solution
Given information:
Claude’s statement: Since he has tried ten specific values for the variable and all of them worked so the given equation is an identity.
Rosalinda’s statement: Specific values could only be used as counterexamples to prove that an equation is not an identity.
Calculation:
Let’s check the equation
Put
Put
It is clear that just trying specific values does not prove an identity because there could be other specific values for which it fails. Thus Rosalinda is correct.
Chapter 7 Solutions
Advanced Mathematical Concepts: Precalculus with Applications, Student Edition
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