matlab解非线性方程组解不出来:代码如下:global b T temp;b=1.2;T=15;temp=1;syms a R;[a,R]=solve('a-(R-b)/2+0.5*((R-b)^2-0.281*R*T)^0.5=0','13*temp-13*(a+b)*a-0.912*T*R=0')运行结果如下:a =-(0.25*(0.281*R*T + (R - 2.0*a)^2 - 1.0
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![matlab解非线性方程组解不出来:代码如下:global b T temp;b=1.2;T=15;temp=1;syms a R;[a,R]=solve('a-(R-b)/2+0.5*((R-b)^2-0.281*R*T)^0.5=0','13*temp-13*(a+b)*a-0.912*T*R=0')运行结果如下:a =-(0.25*(0.281*R*T + (R - 2.0*a)^2 - 1.0](/uploads/image/z/3027468-12-8.jpg?t=matlab%E8%A7%A3%E9%9D%9E%E7%BA%BF%E6%80%A7%E6%96%B9%E7%A8%8B%E7%BB%84%E8%A7%A3%E4%B8%8D%E5%87%BA%E6%9D%A5%EF%BC%9A%E4%BB%A3%E7%A0%81%E5%A6%82%E4%B8%8B%EF%BC%9Aglobal+b+T+temp%3Bb%3D1.2%3BT%3D15%3Btemp%3D1%3Bsyms+a+R%3B%5Ba%2CR%5D%3Dsolve%28%27a-%28R-b%29%2F2%2B0.5%2A%28%28R-b%29%5E2-0.281%2AR%2AT%29%5E0.5%3D0%27%2C%2713%2Atemp-13%2A%28a%2Bb%29%2Aa-0.912%2AT%2AR%3D0%27%29%E8%BF%90%E8%A1%8C%E7%BB%93%E6%9E%9C%E5%A6%82%E4%B8%8B%EF%BC%9Aa+%3D-%280.25%2A%280.281%2AR%2AT+%2B+%28R+-+2.0%2Aa%29%5E2+-+1.0)
matlab解非线性方程组解不出来:代码如下:global b T temp;b=1.2;T=15;temp=1;syms a R;[a,R]=solve('a-(R-b)/2+0.5*((R-b)^2-0.281*R*T)^0.5=0','13*temp-13*(a+b)*a-0.912*T*R=0')运行结果如下:a =-(0.25*(0.281*R*T + (R - 2.0*a)^2 - 1.0
matlab解非线性方程组解不出来:代码如下:
global b T temp;
b=1.2;
T=15;
temp=1;
syms a R;
[a,R]=solve('a-(R-b)/2+0.5*((R-b)^2-0.281*R*T)^0.5=0','13*temp-13*(a+b)*a-0.912*T*R=0')
运行结果如下:
a =
-(0.25*(0.281*R*T + (R - 2.0*a)^2 - 1.0*R^2))/a
R =
0.070153846153846153846153846153846*R*T + a*(a - (0.25*(0.281*R*T + (R - 2.0*a)^2 - 1.0*R^2))/a)
matlab解非线性方程组解不出来:代码如下:global b T temp;b=1.2;T=15;temp=1;syms a R;[a,R]=solve('a-(R-b)/2+0.5*((R-b)^2-0.281*R*T)^0.5=0','13*temp-13*(a+b)*a-0.912*T*R=0')运行结果如下:a =-(0.25*(0.281*R*T + (R - 2.0*a)^2 - 1.0
b=1.2;T=15;temp=1;
syms a R
s=solve(a-(R-b)/2+0.5*((R-b)^2-0.281*R*T)^0.5,13*temp-13*(a+b)*a-0.912*T*R);
>> vpa(s.R)
ans =
-0.50580706462237194771798754220257
>> vpa(s.a)
ans =
-1.9755961125729077963914624034358