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Let A={x in R:- 1 <= x <= 1}=B and C={x...

Let `A={x in R:- 1 <= x <= 1}=B and C={x in R: x >= 0}and` let `S={(x,y)in A xx B: x^2+y^2=1} and S_0={(x,y)in A xx C: x^2+y^2=1}.` The (A) S defines a function from A to B (B) `S_0` defines a function from A to C (C) `S_0` defines a function from A to B (D) S defines a function from A to C

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