September 2018 1 9 Report

1)zadanie.Wyznacz dziedzine.

a)f(x)=\frac{1}{x}
b)f(x)=\frac{1}{x-2}
c)f(x)=\frac{x}{x+3}

d)f(x)=\frac{x+2}{x^{2}-1}

e)f(x)=\sqrt{x-1}
f)f(x)=\sqrt{x+5}
g)f(x)=\sqrt{2-x}
h)f(x)=\sqrt{x^{2}+4}
i)f(x)=\frac{1}{\sqrt{x-1}
j)f(x)=\frac{1}{\sqrt{-x}
k)f(x)=\frac{1}{\sqrt{x^{2}+1}
l)f(x)= \frac{1}{x+1} +\frac{x}{x+2}
ł)f(x)=\frac{1}{x(x+4)}
m)f(x)=\frac{x+2}{(x+5)(x+6)}
2)zadanie. wyznacz dziedzinę i miejsce zerowe
a) f(x)=\frac{x^{2}-9}{\sqrt{x}
b)f(x)=\frac{x^{2}-9}{x(x-3)}
c)f(x)=\frac{x^{2}-4}{\sqrt{x-5}
d)f(x)=\frac{x^{2}-16}{\sqrt{x-4}
e)f(x)=\frac{x-2}{x^{2}-5}
f)f(X)=\frac{x^{2}-2}{(x-3)(x+2)}
g)f(x)=\frac{x^{2}-1}{\sqrt{x^}(x+3)}
f)f(x)=\frac{x+3}{|x|+3}




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