Question

What is signum function

Answer 1

Answer:

Step-by-step explanation:

Signum function is often defined simply as 1 for x > 0 and -1 for x < 0. And for x = 0 it is 0. f(x)={|x|x, if x≠00, if x=0. f(x)={1, if x>00, if x=0−1, if x<0.

Answer 2

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In mathematics, the sign function or signum function is an odd mathematical function that extracts the sign of a real number. In mathematical expressions the sign function is often represented as sgn. To avoid confusion with the sine function, this function is usually called the signum function.