See wikipedia for more info. This means that whatever the number or value may be the answer stays the same. If you simplify an identity equation youll ALWAYS get a true statement.
An equation which is true for every value of the variable is called an identity equation.
A common example of the first meaning is the trigonometric identity. Meaning definition Example. Identity equations are equations that are true no matter what value is plugged in for the variable. Eulers identity is an equality found in mathematics that has been compared to a Shakespearean sonnet and described as the most beautiful equationIt is a special case of a foundational.