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Re:要是能用Mathematica编就好了In Reply To:Re:要是能用Mathematica编就好了 Posted by:Krizalid at 2005-05-15 00:29:08 FindInstance[x^2 - 991y^2 == 1 && x > 0 && y > 0 && Element[(x | y), Integers], {x, y}]
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