已知集合A={x/x=m²-n²,m∈Z,n∈Z}.求证:1)3∈A.2)偶数4k-2 (k∈Z)不属于A.讲的好像不对耶.........
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/14 01:22:52
![已知集合A={x/x=m²-n²,m∈Z,n∈Z}.求证:1)3∈A.2)偶数4k-2 (k∈Z)不属于A.讲的好像不对耶.........](/uploads/image/z/5206781-29-1.jpg?t=%E5%B7%B2%E7%9F%A5%E9%9B%86%E5%90%88A%3D%7Bx%2Fx%3Dm%26sup2%3B-n%26sup2%3B%2Cm%E2%88%88Z%2Cn%E2%88%88Z%7D.%E6%B1%82%E8%AF%81%EF%BC%9A1%EF%BC%893%E2%88%88A.2%29%E5%81%B6%E6%95%B04k-2+%EF%BC%88k%E2%88%88Z%EF%BC%89%E4%B8%8D%E5%B1%9E%E4%BA%8EA.%E8%AE%B2%E7%9A%84%E5%A5%BD%E5%83%8F%E4%B8%8D%E5%AF%B9%E8%80%B6.........)
xR]KQ+=zŭToV"E DEYQjVݞބ"-ڇݽwfΜsf(YxvXd-LE+Iu>y_%12E:Lx5w1!(s:5q(
:b9]B6Jt;#|K?"M0
#ca!E-rvNlr[7~>|BqZŌS8A'ME.aQx $RTa[x!
>>F(SfcƑDuK&D
~F
T_bFϠWw^2:*\s86:X2'`i;