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quadratic |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.06 sec. |
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quadratic, mathematical expression of the second degree in one or more unknowns (see polynomial polynomial, mathematical expression which is a finite sum, each term being a constant times a product of one or more variables raised to powers. With only one variable the general form of a polynomial is a0xn+a ..... Click the link for more information. ). The general quadratic in one unknown has the form ax2+bx+c, where a, b, and c are constants and x is the variable. A quadratic equation ax2+bx+c=0 always has two roots root, in mathematics, number or quantity r for which an equation f(r)=0 holds true, where f is some function . If f is a polynomial , r is called a root of f; for example, r=3 and r ..... Click the link for more information. , not necessarily distinct; these may be real or complex (see number number, entity describing the magnitude or position of a mathematical object or extensions of these concepts. The Natural NumbersCardinal numbers describe the size of a collection of objects; two such collections have the same (cardinal) number of ..... Click the link for more information. ). The quadratic formula gives the roots of any quadratic equation in terms of its coefficients a, b, and c. The expression b2−4ac is called the discriminant and vanishes when the two roots coincide. If a, b, and c are real and the discriminant is not less than zero, the roots are real. |
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| Then he got out note-book and algebra and lost himself in quadratic equations, while the hours slipped by, and the stars dimmed, and the gray of dawn flooded against his window. Furthermore, it is admitted that never, never, in a million lifetimes, could Michael have demonstrated a proposition in Euclid or solved a quadratic equation. For five weeks I crammed, until simultaneous quadratic equations and chemical formulas fairly oozed from my ears. |
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quadratic
