本文目录一览1,解答xy2z32乘以x2y32,已知x2y2x2y2690求x2y2的值3,高数求由曲面zx22y2和z62x2y2所围成立体的体积4,z2x22y2及z62x2y2所围成的立体的体积5,因式分解x3y6y61,解答xy2z32乘以x2y3(-xy2z3)2*(-x2y)3=x2y^4z^6*(-x^6y3)=-x^(2+6)*y^(4+3)*z^6=-x^8y^7z^62,已知x2y2x2y2690求x2y2的值设x2+y2=t那么原式=t2-6t+9=0(t-3)2=0可得t=3将x^...
更新时间:2022-12-18标签: lowa怎么怎么样解答 全文阅读