auxiliary-equation

auxiliary equation

noun Mathematics.
Dictionary.com Unabridged

characteristic equation

noun
1.
Mathematics.
a.
the characteristic polynomial of a given matrix, equated to zero.
b.
Also called auxiliary equation. an equation with one variable and equated to zero, which is derived from a given linear differential equation and in which the coefficient and power of the variable in each term correspond to the coefficient and order of a derivative in the original equation.
2.

Origin:
1920–25

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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