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cameron_c83
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Discrete Math -- Proof methods
Prove |x-y| ≤ |x| + |y| for all real numbers x and y (where |x| represents the
absolute value of x, which equals x if x≥0 and equals -x if x<0). prove by cases
Homework Statement
Prove |x-y| ≤ |x| + |y| for all real numbers x and y (where |x| represents the
absolute value of x, which equals x if x≥0 and equals -x if x<0). prove by cases