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UnderOath1617
Lv 4
UnderOath1617 asked in Science & MathematicsMathematics · 1 decade ago

One-to-one functions?

Let N be the set of positive integers. Prove that G: N x N --> N given by G(m, n) = 5(to the mth power)7(to the nth power) is one-to-one.

Been looking at this for a while and have yet to come up with anything....thanks for any help!

1 Answer

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  • bruinfan
    Lv 7
    1 decade ago
    Favourite answer

    Here is a hint: Assume that this function is not one to one and show that this leads to a contradiction.

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