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f LR -> R LR -> R f(x) x - 3 R, fcx) A=={ 1, 2, 33, B = { 10₁-4, -5 3 f (A) = ?₁ f (B) = ? 9 2. f:R-DR, f(x) = 2x + 1 A = { 7, 9, 193, B = { -5₁-9, -2₁-13 | CA) = ? ₁ f CB) = ?​