If f: R โ†’ R defined by f(x)=3 x-5, then f^-1({-1, -2,1,2})= (a) {1, 4/3, 7/3} (b) {-1,2, -4/3} (c...

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If f: R โ†’ R defined by f(x)=3 x-5, then f^-1({-1, -2,1,2})=
(a) {1, 4/3, 7/3}
(b) {-1,2, -4/3}
(c) {1,2, 4/3, 7/3}
(d) {1,2,-1,-2}

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