Question

matlab 求解微分方程组通解dx/dt=2y dy/dt=-x+1

>> dsolve('Dx=2y','Dy=-x+1')
错误使用 sym>convertExpression (line 1362)
Conversion to 'sym' returned the MuPAD error: Error: Unexpected 'identifier'. [line 1, col 33]

出错 sym>convertChar (line 1273)
s = convertExpression(x);

出错 sym>convertCharWithOption (line 1256)
s = convertChar(x);

出错 sym>tomupad (line 984)
S = convertCharWithOption(x,a);

出错 sym (line 139)
S.s = tomupad(x,'');

出错 dsolve>mupadDsolve (line 327)
sys = [sys_sym sym(sys_str)];

出错 dsolve (line 189)
sol = mupadDsolve(args, options);

>> f1=sym('Dx=2y');
错误使用 sym>convertExpression (line 1362)
Conversion to 'sym' returned the MuPAD error: Error: Unexpected 'identifier'. [line 1, col 24]

出错 sym>convertChar (line 1273)
s = convertExpression(x);

出错 sym>convertCharWithOption (line 1256)
s = convertChar(x);

出错 sym>tomupad (line 984)
S = convertCharWithOption(x,a);

出错 sym (line 139)
S.s = tomupad(x,'');

Answer 1

dsolve('Dx=2*y','Dy=-x+1')