Question

Ajutați-mă va rog!!! ​

Answer 1

Răspuns:

Explicație pas cu pas:

2x+3<=9  |-3

2x<=6

x<=3

A={1,2,3}

3x+7>=1             |-7

3x>=-6

x>=-2

B={-2,-1,0}

A ∩B=Ф

A={1,2,3}

B={-2,-1,0}

AxB={(1,-2),(1,-1),(1,0),(2,-2),(2,-1), (2,0),(3,-2),(3,-1),(3,0)}

BxA={(-2,1), (-2,2),(-2,3),(-1,1),(-1,2),(-1,3),(0,1),(0,2),(0,3)}