A={(x,y)|2x+3y=12,x∈N,y∈N}.B={x|14/(3-x)∈Z,x∈Z}试用列举法表示集合A.B
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A={(x,y)|2x+3y=12,x∈N,y∈N}.B={x|14/(3-x)∈Z,x∈Z}试用列举法表示集合A.B
A={(x,y)|2x+3y=12,x∈N,y∈N}.B={x|14/(3-x)∈Z,x∈Z}试用列举法表示集合A.B
A={(x,y)|2x+3y=12,x∈N,y∈N}.B={x|14/(3-x)∈Z,x∈Z}试用列举法表示集合A.B
∵A:2x+3y=12,x∈N,y∈N
∴x=0,y=4
x=3,y=2
x=6,y=0
A={(0,4),(3,2),(6,0)}
∵B:14/(3-x)∈Z,x∈Z
∴3-x=-1,-2,-7,-14,1,2,7,14(14的约数)
∴x=4,5,10,17,2,1,-4,-11
∴B={4,5,10,17,2,1,-4,-11}
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