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1.4 Lösning 7c - Versionshistorik
2026-11-05T14:13:48Z
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Taifun den 3 augusti 2014 kl. 10.43
2014-08-03T10:43:58Z
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<p><b>Ny sida</b></p><div><big><big><math> {1\,-\,x\,y \over (x\,y)^2\,-\,x\,y} \; = \; {1\,-\,x\,y \over x\,y\,\cdot\,(x\,y\,-\,1)} \; = \; {(-1)\,\cdot\,(-1\,+\,x\,y) \over x\,y\,\cdot\,(x\,y\,-\,1)} \; = \; </math></big></big><br />
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<big><big><math> = \; {(-1)\,\cdot\,(x\,y\,-\,1) \over x\,y\,\cdot\,(x\,y\,-\,1)} \; = \; {(-1) \over x\,y} \; = \; - {1 \over x\,y} </math></big></big></div>
Taifun