已知4X-3Y-3Z=0,X-3Y-Z=0求3X-2Z+Y/Y-X+Z的值X,Y,Z,都不等于0
问题描述:
已知4X-3Y-3Z=0,X-3Y-Z=0求3X-2Z+Y/Y-X+Z的值X,Y,Z,都不等于0
答
eq = {4 x - 3 y - 3 z == 0,x - 3 y - z == 0}
(3 x - 2 z + y)/(y - x + z) /.Solve[eq,{x,y}]
-(1/2)