Matlab 解方程F2 + cosd(48.81)*F1 = 0F6 + cosd(48.81)*F5 - F2 = 0sind(48.81)*F5 + F3 = 0-cosd(48.81)*F1 + F4 = 0-sind(48.81)*F1 + F3 = 1800-F4 - cosd(48.81)*F5 = 1200-F7 - sind(48.81)*F5 - sind(45)*F9 = 0sind(45)*F9 = 1500-cosd(45)*F9 - F8 = 0
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Matlab 解方程F2 + cosd(48.81)*F1 = 0F6 + cosd(48.81)*F5 - F2 = 0sind(48.81)*F5 + F3 = 0-cosd(48.81)*F1 + F4 = 0-sind(48.81)*F1 + F3 = 1800-F4 - cosd(48.81)*F5 = 1200-F7 - sind(48.81)*F5 - sind(45)*F9 = 0sind(45)*F9 = 1500-cosd(45)*F9 - F8 = 0
Matlab 解方程
F2 + cosd(48.81)*F1 = 0
F6 + cosd(48.81)*F5 - F2 = 0
sind(48.81)*F5 + F3 = 0
-cosd(48.81)*F1 + F4 = 0
-sind(48.81)*F1 + F3 = 1800
-F4 - cosd(48.81)*F5 = 1200
-F7 - sind(48.81)*F5 - sind(45)*F9 = 0
sind(45)*F9 = 1500
-cosd(45)*F9 - F8 = 0
Matlab 解方程F2 + cosd(48.81)*F1 = 0F6 + cosd(48.81)*F5 - F2 = 0sind(48.81)*F5 + F3 = 0-cosd(48.81)*F1 + F4 = 0-sind(48.81)*F1 + F3 = 1800-F4 - cosd(48.81)*F5 = 1200-F7 - sind(48.81)*F5 - sind(45)*F9 = 0sind(45)*F9 = 1500-cosd(45)*F9 - F8 = 0
此方程组无解,对增广矩阵进行高斯消去,得到始终无解的方程(最后一行,画蓝线)