In other words, there is some function f(n) element of that makes the equation true; namely, 3n + 1.

2*n*^{2} + 3n + 1 = 2*n*^{2} + =
.

In other words, for any function f(n) element of , there is some
function h(n) element of
; namely, 2*n*^{2} + f(n).