Explain why the relation is not a function from to .

MATHEMATICS · Subjective · CBSE · Mathematics · Relations and Functions · Relations and Functions

Problem

Explain why the relation S={(x,y)∈R×R:x2+y2=1}S = \{(x,y) \in \mathbb{R} \times \mathbb{R} : x^2 + y^2 = 1\} is not a function from R\mathbb{R} to R\mathbb{R}.

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