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Let R be the relation on ℤ+×ℤ+ defined by (a,b)R(c,d) if and only if a−2d=c−2b.(a) prove that R is an equivalence
1. 1 answer
2. 1,141 views
There exist irrational numbers a and b so that a^b is rational. look at the numbers √2^√2 and (√2^√2)^√2a) use similar
1. 0 answers
2. 555 views
A driver runs to the south at 20 m / s for 3 min, thenturns west and runs to 25 m / s for 2 min, and finally turns to the
1. 1 answer
2. 517 views
A driver runs to the south at 20 m / s for 3 min, thenturns west and runs to 25 m / s for 2 min, and finally turns to the
1. 3 answers
2. 596 views