如何编写这个程序

已知F1=0.3320X1+0.2741X2+0.3294X3+0.3309X4+0.0835X5+0.3321X6+0.3284X7+0.2561X8+0.3311X9+0.3042X10+0.3220X11
矩阵为a=[-1.3330   -0.9860   -1.5887   -1.2713   -0.8769   -1.3147   -1.2302   -2.0612   -1.4625   -1.5292   -1.2887;
         -1.1132   -0.0999   -1.0157   -1.1315   -1.2947   -0.9427   -0.8872    0.3740   -0.8494   -1.3438   -0.8928;
         -0.2847   -0.7062   -0.1152   -0.3183    1.3084   -0.5157   -0.5380   -0.1739   -0.5528    0.2356   -0.5740;
          0.0118   -0.6712    0.0993   -0.0049    0.8907   -0.0229   -0.1523    0.3131    0.1196    0.5097    0.0065;
          0.4327   -0.2865    0.5809    0.4006    0.4407    0.4033    0.3243   -0.1131    0.4624    0.5754    0.6413;
          0.9177    1.0543    0.9739    0.8999    0.3765    0.9831    0.9273    1.0436    1.1282    0.7298    0.5153;
          1.3687    1.6956    1.0656    1.4254   -0.8448    1.4097    1.5562    0.6175    1.1546    0.8225    1.5924];
如何编写matlab程序代入原方程求出F1的值？