(3+1)(3x3+1)(3x3x3x3+1)(3x3x3x3x3x3x3x3+1)
(3+1)(3x3+1)(3x3x3x3+1)(3x3x3x3x3x3x3x3+1)
2x(3+1)x(3x3+1)x(3x3x3x3+1)x(3x3x3x3x3x3x3x3+1)+1=?急 注:x是乘号,
我要提问 1/3=0.33333.0.33333...X3=0.999...1/3X3=0.3333...X3=0.99
2x3-3x+三分之二x3-2x-三分之四x3+x-1,其中x=-二分之一
求非齐次线性方程组:2x1-x2+4x3-3x4=-4;x1+x3-x4=-3;3x1+x2+x3=1;7x1+7x3-
求线性方程组 x2-x3-x4=0 x1+x2-x3+3x4=1 x1-x2+x3+5x4=-1 x1+2x2-2x3+
已知x2+3x2+1=0,求x3+x3分之一+2的值
x的平方-3x+1=0求x3次方+x3次方分之一的值
试用克拉默法则求下列线性方程组的解 x1+x3=1;2x1+2x2+3x3=3;x2+x3=-1
求解线性方程组:2X1+3X3=1 x1-X2+2x3=1 X1-3X2+4X3=2
3-X2+X-1分之X4+X3-2乘以x3+2x2+2x+2分之X四次方-1除以-2分之X3-X-X2+1化简
设有线性方程组 (1+λ)x1+x2+x3=0; x1+(1+λ)x2+x3=3; x1+x2+(1+λ)x3=λ 问λ