Question

Cine ma ajuta si pe mine?
toate exercitiile :

Answer 1

1.
a)
AXB={(2,-1),(2,0),(2,4),(3,-1),(3,0),(3,4)}
BXA={(-1,2),(-1,3),(0,2),(0,3),(4,2),(4,3)}
AXA={(2,2),(2,3),(3,2),(3,3)}
BXB={(-1,-1)(-1,0),(-1,4),(0,-1)(0,0),(0,4),(4,-1),(4,0),(4,4)}
b) geometric nu am cum.

2.
a)
A={-1,1}
B={0,1,2}
b)
A={-2,-1,0}
B={-1,0,3}

3.
a)
B={(2,1),(2,7),(2,9),(4,1),(4,7),(4,9),(0,1),(0,7),(0,9)}
b)
C={(1,2),(1,4),(1,6),(1,0),(7,2),(7,6),(7,0),(9,2),(9,6),(9,0)}

4.

M={(2,-3),(4,-2),(6,-1),(8,0),(10,1)}

5.
A={-5,-4,-3,-2,-1,0,1,2,3,4,5}
B={(5,-2),(-4,-1),(-3,0),(-2,1),(-1,2),(0,3),(1,4),(2,5)}

6.
A - cadranul II
B - cadranul III
C - cadranul IV
D - cadranul I
E - cadranul IV,
F - cadranul II

7.
M este in cadranul 2 deci 2a-1<0 adica 2a<1, a<1/2.
8.
E este in cadranul al III-lea deci 3a-6 <0, adica 3a<6, a<2