[tex]\dfrac{2}{15}+\dfrac{3}{15}=\dfrac{5}{15}\\\dfrac{2}{15}+\dfrac{3}{15}+\dfrac{1}{15}=\dfrac{6}{15}\\\dfrac{2}{15}+\dfrac{3}{15}+\dfrac{1}{15}+\dfrac{2}{15}=\dfrac{8}{15}\\\dfrac{2}{15}+\dfrac{3}{15}+\dfrac{1}{15}+\dfrac{2}{15}+\dfrac{3}{15}=\dfrac{11}{15}\\\dfrac{2}{15}+\dfrac{3}{15}+\dfrac{1}{15}+\dfrac{2}{15}+\dfrac{3}{15}+\dfrac{1}{15}=\dfrac{12}{15}\\\dfrac{2}{15}+\dfrac{3}{15}+\dfrac{1}{15}+\dfrac{2}{15}+\dfrac{3}{15}+\dfrac{1}{15}+\dfrac{3}{15}=1[/tex]
[tex]\displaystyle F(x)= \begin{cases} 0 & x \leq -3\\\dfrac{2}{15} & -3 < x\leq-2\\ \dfrac{5}{15}&-2 < x\leq0\\\dfrac{6}{15}&0 < x\leq 2\\\dfrac{8}{15}&2 < x\leq3\\\dfrac{11}{15}&3 < x\leq5\\\dfrac{12}{15}&5 < x\leq7\\1&x > 7\end{cases}\\[/tex]
Sorry za słaby wykres.
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[tex]\dfrac{2}{15}+\dfrac{3}{15}=\dfrac{5}{15}\\\dfrac{2}{15}+\dfrac{3}{15}+\dfrac{1}{15}=\dfrac{6}{15}\\\dfrac{2}{15}+\dfrac{3}{15}+\dfrac{1}{15}+\dfrac{2}{15}=\dfrac{8}{15}\\\dfrac{2}{15}+\dfrac{3}{15}+\dfrac{1}{15}+\dfrac{2}{15}+\dfrac{3}{15}=\dfrac{11}{15}\\\dfrac{2}{15}+\dfrac{3}{15}+\dfrac{1}{15}+\dfrac{2}{15}+\dfrac{3}{15}+\dfrac{1}{15}=\dfrac{12}{15}\\\dfrac{2}{15}+\dfrac{3}{15}+\dfrac{1}{15}+\dfrac{2}{15}+\dfrac{3}{15}+\dfrac{1}{15}+\dfrac{3}{15}=1[/tex]
[tex]\displaystyle F(x)= \begin{cases} 0 & x \leq -3\\\dfrac{2}{15} & -3 < x\leq-2\\ \dfrac{5}{15}&-2 < x\leq0\\\dfrac{6}{15}&0 < x\leq 2\\\dfrac{8}{15}&2 < x\leq3\\\dfrac{11}{15}&3 < x\leq5\\\dfrac{12}{15}&5 < x\leq7\\1&x > 7\end{cases}\\[/tex]
Sorry za słaby wykres.