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a fost răspuns

Explicati:
a)[4x],unde x∈R
b){x/2},unde x∈[-3;3]
c)[√2x],unde x∈[0;5]

Răspuns :

GeorgeDINFO
 [4x] =Z
b) x/2∈[-3 ,3] =>x∈[-3/2  , 3/2]
x∈[-3/2, -1)=-2
x∈[-1,0]=-1
x∈[0,1)=0
x∈[1, 3/2)=1
[x/2]={ -2,-1,0,1}
c)

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