Last Updated
：2025/11/24
signum function
（ plural ）
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(mathematics) The function that determines the sign of a real number, yielding -1 if negative, +1 if positive, or otherwise zero.
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signum function
When you plot the signum function, the graph shows three flat regions: -1 for negative numbers, +1 for positive numbers, and 0 at zero.
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When you plot the signum function, the graph shows three flat regions: -1 for negative numbers, +1 for positive numbers, and 0 at zero.
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