the formula for determining theroots of a quadratic equation from its coefficients: .
noun, Mathematics. 1. a number x that is relatively prime to a given integer y and for which a number z exists whose square gives the same remainder as x when divided by y.
[kwo-drat-iks] /kwɒˈdræt ɪks/ noun, (used with a singular verb) 1. the branch of algebra that deals with equations. [kwo-drat-ik] /kwɒˈdræt ɪk/ adjective 1. . 2. Algebra. involving the and no higher power of the unknown quantity; of the second degree. noun 3. a quadratic polynomial or equation. /kwɒˈdrætɪk/ noun 1. Also called quadratic equation. an […]
[kwod-ruh-cher, -choo r] /ˈkwɒd rə tʃər, -ˌtʃʊər/ noun 1. the act of squaring. 2. Mathematics. 3. Astronomy. 4. Electronics. the relation between two signals having the same frequency that differ in phase by 90°. /ˈkwɒdrətʃə/ noun 1. (maths) the process of determining a square having an area equal to that of a given figure or […]
- Quadrature amplitude modulation
(QAM) A method for encoding digital data in an analog signal in which each combination of phase and amplitude represents one of sixteen four bit patterns. This is required for fax transmission at 9600 bits per second. (1995-02-02)