Definition:Discriminant of Polynomial/Quadratic Equation
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Consider the quadratic equation:
- $a x^2 + b x + c = 0$
The expression $b^2 - 4 a c$ is called the discriminant of the equation.
- 1968: Murray R. Spiegel: Mathematical Handbook of Formulas and Tables ... (previous) ... (next): $\S 9$: Solutions of Algebraic Equations: $9.1$: Quadratic Equation
- 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): Entry: discriminant