Question

Determinati multimile:
A={x∈R| |x|>3}
B={x∈R| |x+1|>2}
C={x∈R| |x|<=0}
Multumesc.

Answer 1

A:  x<-3 sau x>3
A=(-∞,3)∪(3,∞)

B:  x+1<-2 sau x+1>2
x<-3 sau x>1
B=(-∞,-3)∪(1,∞)

C: |x|≥0 prin definitie
deci C={0}

O zi buna!