Question

va tic ajutatima sa fac aceste 3 ex
ex 2,3 si 4 dau 50 puncte pentru un raspuns bun ​

Answer 1

2. M={-2; 7/4; -1,5; 1,2(3); -3/2; 2/5; 4}

A = {4}

B={-2; -1,5; -3/2}

C={-2; 4}

D={7/4; -1,5; 1,2(3); -3/2; 2/5}

3. A ={-2,(6); -1/4; 2/7; 3$\frac{1}{8}$; 5; 0,4; -7/8; -2; -1,4; 2,12(4)}

A∩N={5}

A∩Z={5; -2}

A∩Q={-2,(6); -1/4; 2/7; 3$\frac{1}{8}$; 5; 0,4; -7/8; -2; -1,4; 2,12(4)} = A

A\Q = ∅

A∩Z₋={-2}

A∩Q₊={2/7; 3$\frac{1}{8}$; 5; 0,4; 2,12(4)}

A\Q₋ = {2/7; 3$\frac{1}{8}$; 5; 0,4; 2,12(4)} =A∩Q₊

4.

B={4; 2/3; 8/7; 5,2; 6,3(2); 0; 7/4; 2}

C={4; -2/3; 8/7; -5,2; 6,3(2); 0; -7/4; -2}