A quadratic function is a function of the form <math>f(x)=ax^2+bx+c</math>, where a is nonzero.
In the case where the domain and codomain are R (the real numbers), the graph of such a function is a parabola.
... the island was the second largest recipient of foreign investment[?] in Russia after Moscow. Unemployment in 2002 is only 2%.
External Links
The Sakhalin Times, a ...