f(x) = {\(\frac{|x|}{x}\) for x≠0 and 0 for x=0}. Which function is this?

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answerhappygod
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f(x) = {\(\frac{|x|}{x}\) for x≠0 and 0 for x=0}. Which function is this?

Post by answerhappygod »

a) Constant
b) Modulus
c) Identity
d) Signum function
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