Rozwiązanie:
[tex]f(x)=\frac{x^{2}-3}{x^{2}+1} \\f'(x)=\frac{2x(x^{2}+1)-2x(x^{2}-3)}{(x^{2}+1)^{2}} =\frac{2x^{3}+2x-2x^{3}+6x}{(x^{2}+1)^{2}}=\frac{8x}{(x^{2}+1)^{2}}[/tex]
Zatem:
[tex]f'(\frac{1}{4})=\frac{8*\frac{1}{4} }{(\frac{1}{16}+1)^{2} } =\frac{2}{(\frac{17}{16})^{2} } =2*\frac{256}{289} =\frac{512}{289}=1,771626297...[/tex]
Odpowiedź: [tex]177[/tex].