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F(x)=1-2x^2 / x^2 +1.Calculand F(√2)

Răspuns :

Msvladutza
f(√2)=1-4/2+1=-3/3=-1
Deni00
[tex]F(x)=\frac{1-2x^2}{x^2+1}=\ \textgreater \ F(\sqrt{2})=\frac{1-2*(\sqrt{2})^2}{(\sqrt{2})^2+1}=\\ = \frac{1-2*2}{2+1}=\frac{1-4}{3}=\frac{-3}{3}=-1[/tex]
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