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FUNCTIONS :star: :star: (:pencil2:Identity Function :pencil2: (Let R be…
FUNCTIONS :star: :star:
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:!:Signum Function :!:
The function f: defined by f(x)={1,if x>0 is called signum function. The domain of the signum function is R and the range is the set{-1,0,1} 
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