Question

Fie multimea M=0/3,1/3,2/3,3/3,4/3,5/3,6/3}
Aflati:
a)M∩N
b)M∩N*
c)M\N
Coroannnna!!!!!!!

Answer 1

a) {0,3} b){3}c {3,1/3,2/3,3/3,4/3,5/3,6}

Answer 2

$\it M=\left\{\dfrac{0}{3},\ \dfrac{1}{3},\ \dfrac{2}{3},\ \dfrac{3}{3},\ \dfrac{4}{3},\ \dfrac{5}{3},\ \dfrac{6}{3}\right\}$

$\it M=\left\{0,\ \dfrac{1}{3},\ \dfrac{2}{3},\ 1,\ \dfrac{4}{3},\ \dfrac{5}{3},\ 2\right\} \\\;\\ \\\;\\ M \cap \mathbb{N} = \{0,\ \ 1,\ \ 2\} \\\;\\ \\\;\\ M \cap \mathbb{N^*} = \{ 1,\ \ 2\}$

$\it M \backslash \mathbb{N}=\left\{ \dfrac{1}{3},\ \dfrac{2}{3},\ \dfrac{4}{3},\ \dfrac{5}{3}\right\}$