matlab 符号推理出现问题[x,y,z,w]=solve('3*x+4*y-7*z-12*w=4','5*x-7*y+4*z+2*w=-3','x+0*y+8*z-5*w=9','-6*x+5*y-2*z+10*w=-8')x =-2932/2359y =-3501/2359z =-1608/2359w =1259/2359正确答案应该是:ans =-1.4841-0.68160.5337-1.2429这是为什
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![matlab 符号推理出现问题[x,y,z,w]=solve('3*x+4*y-7*z-12*w=4','5*x-7*y+4*z+2*w=-3','x+0*y+8*z-5*w=9','-6*x+5*y-2*z+10*w=-8')x =-2932/2359y =-3501/2359z =-1608/2359w =1259/2359正确答案应该是:ans =-1.4841-0.68160.5337-1.2429这是为什](/uploads/image/z/10990824-24-4.jpg?t=matlab+%E7%AC%A6%E5%8F%B7%E6%8E%A8%E7%90%86%E5%87%BA%E7%8E%B0%E9%97%AE%E9%A2%98%5Bx%2Cy%2Cz%2Cw%5D%3Dsolve%28%273%2Ax%2B4%2Ay-7%2Az-12%2Aw%3D4%27%2C%275%2Ax-7%2Ay%2B4%2Az%2B2%2Aw%3D-3%27%2C%27x%2B0%2Ay%2B8%2Az-5%2Aw%3D9%27%2C%27-6%2Ax%2B5%2Ay-2%2Az%2B10%2Aw%3D-8%27%29x+%3D-2932%2F2359y+%3D-3501%2F2359z+%3D-1608%2F2359w+%3D1259%2F2359%E6%AD%A3%E7%A1%AE%E7%AD%94%E6%A1%88%E5%BA%94%E8%AF%A5%E6%98%AF%EF%BC%9Aans+%3D-1.4841-0.68160.5337-1.2429%E8%BF%99%E6%98%AF%E4%B8%BA%E4%BB%80)
matlab 符号推理出现问题[x,y,z,w]=solve('3*x+4*y-7*z-12*w=4','5*x-7*y+4*z+2*w=-3','x+0*y+8*z-5*w=9','-6*x+5*y-2*z+10*w=-8')x =-2932/2359y =-3501/2359z =-1608/2359w =1259/2359正确答案应该是:ans =-1.4841-0.68160.5337-1.2429这是为什
matlab 符号推理出现问题
[x,y,z,w]=solve('3*x+4*y-7*z-12*w=4','5*x-7*y+4*z+2*w=-3','x+0*y+8*z-5*w=9','-6*x+5*y-2*z+10*w=-8')
x =
-2932/2359
y =
-3501/2359
z =
-1608/2359
w =
1259/2359
正确答案应该是:
ans =
-1.4841
-0.6816
0.5337
-1.2429
这是为什么呢?x,y,z,w的值出现了交换.
matlab 符号推理出现问题[x,y,z,w]=solve('3*x+4*y-7*z-12*w=4','5*x-7*y+4*z+2*w=-3','x+0*y+8*z-5*w=9','-6*x+5*y-2*z+10*w=-8')x =-2932/2359y =-3501/2359z =-1608/2359w =1259/2359正确答案应该是:ans =-1.4841-0.68160.5337-1.2429这是为什
matlab是以字母的顺序排列的,所以是wxyz的顺序.
你前面给出的[x, y, z, w]只是把方程的结果赋值给他们,你的x和方程里的x没有关系.
祝你学习愉快!