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Printable version From Wikipedia, the free encyclopedia Visualisation of the complex roots of y = ax 2 + bx + c : the parabola is rotated 180° about its vertex ( orange ).
Quadratic equation graph key points: Image title: Graph of y = ax² + bx + c having real roots and positive a with key points labellled by CMG Lee. Roots and y-intercept are in red, turning point and axis of symmetry are in purple, and focus and directrix are in blue.
Quadratic function graph complex roots: Image title: Visualisation of the complex roots of y = ax² + bx + c where a is positive and the discriminant, b² - 4ac is negative, by CMG Lee. The parabola is rotated 180° about its vertex (yellow). Its roots are rotated 90° around their mid-point, and the plane is interpreted as the complex plane ...
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The graph of a real single-variable quadratic function is a parabola. If a quadratic function is equated with zero, then the result is a quadratic equation . The solutions of a quadratic equation are the zeros (or roots ) of the corresponding quadratic function, of which there can be two, one, or zero.
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