ngandinhkim262 ngandinhkim262

13-11-2022
Mathematics

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xét trong E quan hệ R xác định bởi
xRy tương đương x^2 - y^2 = x-y
A. Kiểm chứng rằng R là 1 quan hệ tương đương
B. Với mọi x thuộc E , tính cl(x)

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