What is a Signum Function??
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Step-by-step explanation:
Bonjour
In mathematics, the sign function or signum function (from signum, Latin for "sign") is an odd mathematical function that extracts the sign of a real number. In mathematical expressions the sign function is often represented as sgn.
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SOLUTION
f: R------R
This is known as signum function.
Let us check value of f(x) for different values of x
for x= -1
x<0
so, f(x)= -1
For x= -2
x<0
so, f(x) = -1
For x= 1
x>0
so, f(x)= 1
For x= 2
x>0
so, f(x)= 1
For x= 0
x= 0
so, f(x)= 0
Attachment a graph---
hope it helps ☺️
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