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what is a signum function?

vp naidu , 15 Years ago
Grade 11
anser 1 Answers
AKASH GOYAL AskiitiansExpert-IITD

Dear Naidu

The signum function of a real number x is defined as follows:

\sgn(x) = \begin{cases} -1 & \text{if } x < 0, \\ 0 & \text{if } x = 0, \\ 1 & \text{if } x > 0. \end{cases}

All the best.

AKASH GOYAL

AskiitiansExpert-IITD

 

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Last Activity: 15 Years ago
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