Question 11 / 17:  Která z nabízených funkcí má stejný definiční obor jako funkce

$$u\colon\,y=\frac{-x+1}{|\log(|x^2-1|)|+3}+\frac{5}{2+x}+1$$

A  $$d\colon\,y=\frac{x^2}{x^2+3x+2}-5x+\frac{x}{|x-1|}$$
B  $$e\colon\,y=4x+\frac{1}{2+x}-\log(x+1)$$
C  $$f\colon\,y=x^3-\frac{x(x-2)}{x-1}+\frac{x-\frac{1}{2}}{x+2}+5$$
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Funkce - procvičování II

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