求解方程组,用已知量表示未知量,手算或MATLAB算均可,给个正确答案就成.U1 / U2=R1 * (30.11+R2) / R2 / (30.11+R1)U11 / U22=R11 * (30.11+R2) / R2 / (30.11+R11)R11 = R1 * R / (R1+R)其中,U1,U2,U11,U22,R为已知量,R11为中间
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![求解方程组,用已知量表示未知量,手算或MATLAB算均可,给个正确答案就成.U1 / U2=R1 * (30.11+R2) / R2 / (30.11+R1)U11 / U22=R11 * (30.11+R2) / R2 / (30.11+R11)R11 = R1 * R / (R1+R)其中,U1,U2,U11,U22,R为已知量,R11为中间](/uploads/image/z/15255069-69-9.jpg?t=%E6%B1%82%E8%A7%A3%E6%96%B9%E7%A8%8B%E7%BB%84%2C%E7%94%A8%E5%B7%B2%E7%9F%A5%E9%87%8F%E8%A1%A8%E7%A4%BA%E6%9C%AA%E7%9F%A5%E9%87%8F%2C%E6%89%8B%E7%AE%97%E6%88%96MATLAB%E7%AE%97%E5%9D%87%E5%8F%AF%2C%E7%BB%99%E4%B8%AA%E6%AD%A3%E7%A1%AE%E7%AD%94%E6%A1%88%E5%B0%B1%E6%88%90.U1+%2F+U2%3DR1+%2A+%2830.11%2BR2%29+%2F+R2+%2F+%2830.11%2BR1%29U11+%2F+U22%3DR11+%2A+%2830.11%2BR2%29+%2F+R2+%2F+%2830.11%2BR11%29R11+%3D+R1+%2A+R+%2F+%28R1%2BR%29%E5%85%B6%E4%B8%AD%2CU1%2CU2%2CU11%2CU22%2CR%E4%B8%BA%E5%B7%B2%E7%9F%A5%E9%87%8F%2CR11%E4%B8%BA%E4%B8%AD%E9%97%B4)
求解方程组,用已知量表示未知量,手算或MATLAB算均可,给个正确答案就成.U1 / U2=R1 * (30.11+R2) / R2 / (30.11+R1)U11 / U22=R11 * (30.11+R2) / R2 / (30.11+R11)R11 = R1 * R / (R1+R)其中,U1,U2,U11,U22,R为已知量,R11为中间
求解方程组,用已知量表示未知量,手算或MATLAB算均可,给个正确答案就成.
U1 / U2=R1 * (30.11+R2) / R2 / (30.11+R1)
U11 / U22=R11 * (30.11+R2) / R2 / (30.11+R11)
R11 = R1 * R / (R1+R)
其中,U1,U2,U11,U22,R为已知量,R11为中间量,R1,R2为未知量,现在要用已知量表示未知量.
求解方程组,用已知量表示未知量,手算或MATLAB算均可,给个正确答案就成.U1 / U2=R1 * (30.11+R2) / R2 / (30.11+R1)U11 / U22=R11 * (30.11+R2) / R2 / (30.11+R11)R11 = R1 * R / (R1+R)其中,U1,U2,U11,U22,R为已知量,R11为中间
matlab程序如下:
>> syms u1 u2 u11 u22 r r11 r1 r2;
y1=sym('u1/u2=r1*(30.11+r2)/r2/(30.11+r1)');
y2=sym('u11/u22=r11*(30.11+r2)/r2/30.11+r11');
y3=sym('r11=r1*r/(r1+r)');
>> [r11,r1,r2]=solve(y1,y2,y3,r11,r1,r2)
结果如下:
r11 =
-.10000000000000000000000000000000e-1*r*(.25000000000000000000000000000000e35*u22*u1-.25000000000000000000000000000000e35*u11*u2)/(8302889405513118565260710727333.*u22*u1*r-.25000000000000000000000000000000e33*u11*u2+.25000000000000000000000000000000e33*u2*r*u22)
r1 =
-1.*(.25000000000000000000000000000000e35*u22*u1-.25000000000000000000000000000000e35*u11*u2)*r/(-.25000000000000000000000000000000e35*u1+.83028894055131185652607107273330e33*u1*r+.25000000000000000000000000000000e35*r*u2)/u22
r2 =
-30.110000000000000000000000000000*r*(.25000000000000000000000000000000e35*u22*u1-.25000000000000000000000000000000e35*u11*u2)/(-.75275000000000000000000000000000e36*u1*u11+.77775000000000000000000000000000e36*u22*u1*r+.25000000000000000000000000000000e35*u11*r*u1-.25000000000000000000000000000000e35*u11*r*u2)
r11是中间变量不用管,在r1和r2中类似“.123”表示‘“0.123”,e后面数字是科学计数法的幂次项.