[asigirl460]

C1)= (x,3-y)=(4+y,x+1)=>x.y?

C2)= (2^x-2,5^y-1)=(8,125)=>2x+y?

C3)= s(AxA)=25 s(A) kaçtır? a)3 b)4 c)5 d)6 e)7

C4)= AxC={(1,2),(1,3),(1,4),(2,2),(2,3),(2,4)}
BxC={(1,2),(1,3),(1,4),(a,2),(a,3),(a,4)} ifadelerini buluun??
a)= (AuB)xC
b)= (AnB)xC

[MatematikciFM]

1)
x=4+y
3-y=x+1

3-y=4+y+1
2y=-2
y=-1
x=3
x.y=(-1).3=-3

2)

2^x-2=8=2³
x-2=3
x=5

5^y-1=125=5³
y-1=3
y=4
2x+y=2.5+4=14

3)
s(A)=m ise, s(AxA)=m²=25

s(A)=m=5

4)

AxC={(1,2),(1,3),(1,4),(2,2),(2,3),(2,4)}
BxC={(1,2),(1,3),(1,4),(a,2),(a,3),(a,4)}
(AuB)xC=(AxC)u(BxC)={(1,2),(1,3),(1,4),(2,2),(2,3),(2,4),(a,2),(a,3),(a,4)}
(AnB)xC=(AxC)n(BxC)={(1,2),(1,3),(1,4)}