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- Thread starter e2m2a
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- #3

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That makes sense. Thanks.

- #4

fresh_42

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What if ##x = 2y## and ##y = x - 1##?

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They are two independent equations and will give you the solution for a unique ordered pair (x, y).

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Take, for example, x=y. From this you can determine neither x nor y. Nevertheless, the equation is very sensible, i.e. contains a lot of useful information. For instance, if x is your position and y is the position of your wallet, and you are a tourist lost in Rio De Janeiro, you will be very happy to know that x=y.

- #7

Mark44

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What if ##x = 2y## and ##y = x - 1##?

A unique solution is quite different from a solution set that is infinitely large.They are two independent equations and will give you the solution for a unique ordered pair (x, y).

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