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Posts: 13820
May 15 11 9:46 AM
Only Human
dg wrote: Sorry, but 5/0 is "undefined" in mathematics. from calculus, the limit of c/x as x approaches 0 is infinity.
Permit me to show that (-1) x (+1) = -1:1) let A = -12) then (A/A) = +13) thus (-1)/(-1) = +1 4) after multiplying both sides by (-1) yields (-1) = (-1) x (+1) 5) since also (-2) = (-1) x (+2) and (-n) = (-1) x (+n) we can therefore conclude that any positive number when multiplied by a minus 1 will yield a negative answer. Also, taking the result (-1) = (-1) x (+1),we can divide both sides by (-1) to obtain (-1/-1) = (-1/-1) x (+1), thus (+1) = (+1) x (+1) or 1=1, which confirms the proof.
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