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.
... Amundsen, but died on the return voyage
Scylax of Caryanda[?] - a Greek explorer sent by the king of Persia to sail down the Indus River and around Arabia to Egypt
Ernest ...