来自邱铁的问题
【三元一次方程1.已知3x-4Y-Z=0,2X+Y-8Z=0,求(X*X+Y*Y+Z*Z)/(XY+YZ+ZX)的值.2.X+Y+Z=6,X-3Y+2Z=1,3X+2Y-Z=4.求X,Y,Z的值.3.已知4X-5Y+2Z=0,X+4Y-3Z=0(XYZ不等于0),则X比Y比Z的值为()(尽量写出解题过程)】
三元一次方程
1.已知3x-4Y-Z=0,2X+Y-8Z=0,求(X*X+Y*Y+Z*Z)/(XY+YZ+ZX)的值.
2.X+Y+Z=6,X-3Y+2Z=1,3X+2Y-Z=4.求X,Y,Z的值.
3.已知4X-5Y+2Z=0,X+4Y-3Z=0(XYZ不等于0),则X比Y比Z的值为()
(尽量写出解题过程)
1回答
2020-06-22 13:21