Equality (functions)

From CS2800 wiki
Two functions [math]f [/math] and [math]g : A \href{/cs2800/wiki/index.php/%E2%86%92}{→} B [/math] are equal (written [math]f = g [/math]) if they agree on every input. In other words, [math]f = g [/math] if, for all [math]x \href{/cs2800/wiki/index.php/%E2%88%88}{∈} A [/math], [math]f(x) = g(x) [/math].