5^(2/3)x5^(1/2)+(3^5x2^5)^(1/6)
1x5+2x5+3x5+4x5+5x5… 麻烦给我一个公式.
解方程组X2+X3+X4=1 X1+X2+X3=5 X3+X4+X5=-5 X4+X5+X1=-3 X5+X1+X2=2
1x1-2x2+3x3-4x4+5x5-6x6.-100x100+101x101
解一道方程组x1+x2+x3=5,x2+x3+x4=1,x3+x4+x5=-5,x4+x5+x1=-3,x5+x1+x2
已知数据X1,X2,X3,X4,X5的平均数是X拔,则一组新数据X1+1,X2+2,X3+3,X4+4,X5+5的平均数
X1 - X3 - X4 -5X5=0 X1+2X2+3X3+3X4+7X5=0 X1+X2+X3+X4+X5=0 X2
1x1 2x2 3x3 4x4 5x5```````nxn有什么规律
1x1 2x2 格式正确 3x3 4x4 5x5
求解一个方程急 X(1次方)+X2+X3=5 X2+X3+X4=1 X3+X4+X5=-5 X4+X5+X1=-3 X5
1x2/1+2x3/1+3x4/1+4x5/1+5x6/1+6x7/1
1/1x2+1/2x3+1/3x4+1/4x5+1/5x6+1/6x7
[1又2分之3减(1/3-1/6+5/12)x2.4]x5