V(t)= [tex]\sqrt{(-sint)^2+(cost)^2+(2e^{2t})^2}= \sqrt{1+4e^{4t}}[/tex]
Hvor får han 1 fra?
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[tex](-sint)^2+(cost)^2=sin^2t+cos^2t=1[/tex]Gjest wrote:V(t)= [tex]\sqrt{(-sint)^2+(cost)^2+(2e^{2t})^2}= \sqrt{1+4e^{4t}}[/tex]
Hvor får han 1 fra?
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