Proving an Identity: Other Examples (7.3.2)

Question 1

• Review: An identity is a mathematical statement that is true for all meaningful values of the variable(s) involved.

Answer 1

• Review: An identity is a mathematical statement that is true for all meaningful values of the variable(s) involved.

Question 2

• Review: When proving an identity, treat each side of the equal sign as its own expression. Do not treat the identity as an equality until its proven that both sides are equal.

Answer 2

• Review: When proving an identity, treat each side of the equal sign as its own expression. Do not treat the identity as an equality until its proven that both sides are equal.