Răspuns:
Explicație pas cu pas:
E(x)=(x+2)/(2x-3)
E(a)=(a+2)/(2a-3)=(2a-3-a-1)/(2a-3)=1-(a+1)/(2a-3)∈Z
a+1=0 a=-1
(a+1)/(2a-3)=1 a+1=2a-3 a=4
(a+1)/(2a-3)=-1 a+1=-2a+3 3a=2 nu convine
(a+1)/(2a-3)=2 a+1=4a-6 3a=7 nu convine
(a+1)/(2a-3)=-2 a+1=-4a+6 5a=5 a=1
(a+1)/(2a-3)=3 a+1=6a-9 5a=10 a=2
(a+1)/(2a-3)=-3 a+1=-6a+9 7a=8 nu convine
(a+1)/(2a-3)=4 a+1=8a-12 7a=13
(a+1)/(2a-3)=-4 a+1=-8a+12 9a=11
(a+1)/(2a-3)=5 a+1=10a-15 9a=16
(a+1)/(2a-3)=-5 a+1=-10a+15 11a=14
