Question

Fie multimile M={x apartinand lui R | -9<-2x+1< sau =1} si P={x aprtinand lui Z | -1< sau = x + 3supra 4 <sau =3}
Aflati elementel celor 2 multimi si calculati M υ P;M diferenta P​

Answer 1

Răspuns:

Explicație pas cu pas:

M=-9<-2x+1≤1

M=- 9-1<-2≤1-1

M= -10 <-2x≤ 0   l  : 2

M= -5< -x≤0

M= -x < -5≤0

M= x<5≤0

M= { 4,3,2,1,0 }

-

P=⁴⁾-1 ≤ (x+3 )/4 ≤ ⁴⁾3

P= -4 ≤x+3≤12

P=-3-4≤x≤12-3

P=-7≤x≤9

P={ -7,-6,-5,-4,-3,-2,-1 0,1,2,3,4,5,6,7,8,9 }

-

M∪P= { -7,-6,-5,-4,-3,-2,-1 ,0,1,2,3,4,5,6,7,8,9 }

M-P={