Question

Va rog frumos este urgent dau coroana .Exercitiul 3 si 5

Answer 1

ex 3.

A∩N={2,0}

A∩Z={2,-3,0}

A∩Z+={2,0}

A∩Q={2. -3, -1/2,  0,(5), -6/3,  0,  1/0.(3),  -3INTREGI SI 5/6}

A∩Q- ={ -3, -1/2, -6/3,   -3INTREGI SI 5/6}

Exercitiul 5.

daca -x=-11/19=>x=11/19 si -(-x)=11/19

daca x=3,27=>- x= - 3,27 si -(-x)=3,27

daca -(-x)=31/7=> x=31/7 si -x=-31/7

daca -x= +0,7=>x= - 0,7 si -(-x)= - 0,7

daca x=-4/3=>-x=4/3 si -(-x)= - 4/3

daca -(-x)=-1/11=>x=1/11 si -x= - 1/11