用消元法解方程组x1+x2-2x2=-3,5x1-2x2+7x3=22.2x1-5x2+4x3=4 是字母x.x1+2x2-x3-2x4=0,2x1-x2-x3+x4=1,3x1+x2-3x3-x4=1

用matlab中ode45解方程组 x1'=-2*x1+x2 x2'=-3*x1+6*x2 初始值自定 解方程组 X1-X2-4X3=-1 X2+X3=2 X1+X2-2X3=3线性代数 方程组3x1+x2+x3 用消元法解方程组x1+x2-2x2=-3,5x1-2x2+7x3=22.2x1-5x2+4x3=4 是字母x.x1+2x2-x3-2x4=0,2x1-x2-x3+x4=1,3x1+x2-3x3-x4=1 matlab解超定方程组2x1+x2=3x1+2x2=4x1+x2=5请问这个方程组怎么用MATLAB程序怎么写啊 min=2*x1+3*x2; x1+x2>=350; x1>=100; 2*x1+x2 解方程组X1-2x2+3x3-x4=1,3x1-x2+5x3-3x4=2,2x1+x2+2x3-2x4=3 解方程组(x1+2x2+2x3+x4=0,2x1+x2-2x3-2x4=0,x1-x2-4x3-3x4=0) 解非线性方程组 x1+2x2+2x3+x4=0 2x1+x2-2x3-2x4=0 x1-x2-4x3-3x4=0 解方程组 x1+2x2+2x3+x4=0 2x1+x2-2x3-2x4=0 x1-x2-4x3-3x4=0 γ为何值时,方程组有非零解3X1+2X2-X3=0γX1+7X2-2X3=02X1-X2=3X3=0 γ为何值时,方程组有非零解3X1+2X2-X3=0γX1+7X2-2X3=02X1-X2=3X3=0 写出方程组2*x1+x2-x3+x4=1,x1+2*x2+x3-x4=2,x1+x2+2*x3+x4=3的通解? 求非齐次线方程组的通解 ：2x1+x2-x3+x4=1 x1+2x2+x3-x4=2 x1+x2+2x3+x4=3 具体写出方程组：2x1+x2-x3+x4=1;x1+2x2+x3-x4=2;x1+x2+2x3+x4=3的通解 用高斯消元法解下列线性代数方程组X1+2X2-X3-2X4=22X1-X2+X3-2X4=3X1-2X2+X4=-5 齐次方程组,x1+4X2-3X3=0 2X1+5X2-3X3=0 X1+2X2-X3=0求其通解 用克拉默法则解下列方程组1.2X1-X2-X3=3 X1+X2+X3=2 -X1+2X2-3X3=5