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r1ppch3n
Moderator
Re: Totaler Blackout.... mathe
Tuesday, June 15th 2004, 10:00pm
a - b = 7
Quoted from "Storm"
Der Differenzwert zweier ganzer Zahlen ist 7
[quote author=Storm link=board=4;num=1087321896;start=0#0 date=06/15/04 um 19:51:36]Wenn Du die größere der beiden Zahlen quadrierst, und dazu 21 addierst, so erhätst Du den gleichen Wert wie aus dem Produkt der beiden Zahlen[/quote]a2 + 21 = a * b
daraus kann man dann so lustige sachen ableiten wie
b = a - 7
a2 + 21 = a * (a - 7) <=> a2 + 21 = a2 - 7 a <=> -7 a = 21 <=> a = -3
b = -3 - 7 = -10
also wirklich ganz einfach
edit:
ma wieder zu langsam... :
Storm
God
Re: Totaler Blackout.... mathe
Tuesday, June 15th 2004, 10:00pm
a - b = 7
a2 + 21 = a * b
daraus kann man dann so lustige sachen ableiten wie
b = a - 7
a2 + 21 = a * (a - 7) <=> a2 + 21 = a2 - 7 a <=> -7 a = 21 <=> a = -3
b = -3 - 7 = -10
also wirklich ganz einfach
;D thx supär erklärt!
