A quadratic function is polynomial function that operates off of the equation:
f(x)=ax²+bx+c
In this equation the terms a, b, and c are all real numbers with a ≠ zero. When you graph a quadratic function the result is a “U-shaped” curve, curving either up or down, not sideways. This curve is also known as a parabola.
f(x)=ax²+bx+c
In this equation the terms a, b, and c are all real numbers with a ≠ zero. When you graph a quadratic function the result is a “U-shaped” curve, curving either up or down, not sideways. This curve is also known as a parabola.
The standard form of the quadratic equation is:
y=ax²+bx+c
A quadratic function uses the same equations as linear functions, except when you are working with quadratic functions, one of the terms you are using must be squared. The squared term is what creates the parabola (“u-shaped” curve).
Links:
http://en.wikipedia.org/wiki/Quadratic_function
http://www.analyzemath.com/quadraticg/quadraticg.htm
http://dl.uncw.edu/digilib/mathematics/algebra/mat111hb/P&r/quadratic/quadratic.html
http://hotmath.com/images/gt/lessons/genericalg1/parabola_width.gif
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