Her er åpenbart en triviell regnefeil. Prøv å finne denne:
I [tex]\sqrt{\frac{-a}{a}}=\sqrt{\frac{-a}{a}}[/tex]
II [tex]\sqrt{\frac{-a}{a}}=\sqrt{\frac{a}{-a}}[/tex]
III [tex]\frac{\sqrt{-a}}{\sqrt{a}}=\frac{\sqrt{a}}{\sqrt{-a}}[/tex]
IV [tex]\sqrt{-a}\cdot \sqrt{-a} = \sqrt{a}\cdot \sqrt{a}[/tex]
V [tex]-a = a[/tex]
VI [tex]1 = -1[/tex]
Regnefeil
Moderatorer: Vektormannen, espen180, Aleks855, Solar Plexsus, Gustav, Nebuchadnezzar, Janhaa
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i III: [tex]\sqrt{-\frac aa}\neq\frac{\sqrt{a}}{\sqrt{-a}}[/tex]viking skrev:Her er åpenbart en triviell regnefeil. Prøv å finne denne:
I [tex]\sqrt{\frac{-a}{a}}=\sqrt{\frac{-a}{a}}[/tex]
II [tex]\sqrt{\frac{-a}{a}}=\sqrt{\frac{a}{-a}}[/tex]
III [tex]\frac{\sqrt{-a}}{\sqrt{a}}=\frac{\sqrt{a}}{\sqrt{-a}}[/tex]
IV [tex]\sqrt{-a}\cdot \sqrt{-a} = \sqrt{a}\cdot \sqrt{a}[/tex]
V [tex]-a = a[/tex]
VI [tex]1 = -1[/tex]
Edit: Ser at Janhaa kom meg i forkjøpet.
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