Console.WriteLine("x={0},y={1},z={2}",x,y,z) 请问｛0｝｛1｝｛2｝代表什么

Console.WriteLine("x={0},y={1},z={2}",x,y,z) 请问｛0｝｛1｝｛2｝代表什么 Console.WriteLine("x = {0}",x); 1.已知x,y,z满足2│x-y│+(根号2y-z)+z平方-z+(1/4)=0,求x,y,z值. Console.WriteLine("arr[{0},{1}]={2}",i,j,arr[i,j]) 请问C# 里 ar 2x-2y+z=0 2x+y-z=1 x+3y-2z=1 {2x-2y+z=0,2x+y-z+1,x+3y-2z=1 x^2+y^2+z^2+4x+4y+4z+1=0,求x+y+z x^2+y^2+z^2+4x+4y+4z+1=0求x+y+z x^2+y^2+z^2+4x+4y+4z+1=0 求x+y+z 已知x,y,z满足x+y+2z=1,x²+y²+6z+1.5=0,求x,y,z的值 已知 x,y,z都是正实数,且 x+y+z=xyz 证明 (y+x)/z+(y+z)/x+(z+x)/y≥2(1/x+1 {x+y+z=4 {2y+z=0 {3x+2y-4z=-1