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.
... in the county of Dalarna. The municipality covers an area of 1500.7 km². Of the total population of 26450, 13112 are male, and 13338 are female. The populatio ...