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even integer
[even integer|even integer] represents an even integer, which is a whole number divisible by two.
Definition
even integer represents an even integer, which is a whole number divisible by two. The number of negative real zeros is either equal to the number of sign changes in f(−x) or less than that number by an even integer.
Mechanism
even integer describes how the number of positive and negative real zeros relates to sign changes in f(x) and f(-x). Positive real zeros equal sign changes in f(x) or differ by an even integer. Negative real zeros equal sign changes in f(-x) or differ by an even integer.
Comparison
even integer The number of negative real zeros differs from the number of sign changes of f ( − x ) by an even integer or is equal to it.