0
an identity?
maybe a tautology?
Comment by mgately:
In the field of discrete mathematics (simplified the study of logic) any expression which always evaluates to true is in fact called a tautology. While less cool sounding, an expression which always evaluates to false is just called a contradiction.
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Earn +20 ptsQ: What is it called when there is an equation that is always true?
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What is it called when an equation is always true?
In math, an equation that is always true is called an identity.
What is the number that makes an equation true called?
It's callled the "solution" of the equation.
Is an identity that is true for every value called an equation?
No, it's the other way round - an equation that's true for every value of the variable(s) is called an identity. Of course, an identity is also an equation.
What is an equation that is true for every value of the variable?
legal equation * * * * * In mathematics, it is called an identity.
It is always helpful to rewrite an equation in standard form as a first step in solving it.?
True
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