A nuclear stress test is a noninvasive means of detecting the presence and/or signiï¬ cance of coronary. artery disease. Coronary artery disease is a condition in which there is narrowing or blockage of the blood. vessels supplying the heart muscle. This can cause chest pain which is known as angina pectoris.
coefficient. n. 1. (Mathematics) maths. a. a numerical or constant factor in an algebraic term: the coefficient of the term 3xyz is 3. b. the product of all the factors of a term excluding one or more specified variables: the coefficient of x in 3axyz is 3ayz.
An arithmetic expression composed by summing multiples of powers of some variable. P(x) = sum a_i x^i for i = 0 .. N. The multipliers, a_i, are known as coefficients and N, the highest power of x with a non-zero coefficient, is known as the degree of the polynomial. If N=0 then P(x) is constant, if N=1, P(x) is linear in x. N=2 gives a quadratic and N=3, a cubic.