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Mathematics, 16.07.2021 04:20 vnfrancis1353
1. Cho tập X có m phần tử, tập Y có n phần tử. Hỏi tạo được bao nhiêu ánh xạ từ X vào Y ? Giải thích.
2. Kiểm tra tính đơn ánh, toàn ánh của ánh xạ sau: f:
x y f(x)x2 4x5
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1. Cho tập X có m phần tử, tập Y có n phần tử. Hỏi tạo được bao nhiêu ánh xạ từ X vào Y ? Giải thích...
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