When is an equation an identity?

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2007-01-04 08:40:42 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

when it is unconditionally true for all values of the variable

2007-01-04 08:42:38 · answer #1 · answered by raj 7 · 0⤊ 0⤋

An equation is an identity when the equation defines the meaning of the variables in the equation.

2007-01-04 16:50:29 · answer #2 · answered by Doctor 7 · 0⤊ 0⤋

When the image of any element x in the domain is again x

2007-01-04 16:59:29 · answer #3 · answered by JasonM 7 · 0⤊ 0⤋

x=x
2=2
etc

2007-01-04 16:44:14 · answer #4 · answered by yupchagee 7 · 0⤊ 0⤋