作业帮matlab三元一次符号方程组解不出来
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matlab三元一次符号方程组解不出来
>> syms va vb vc ra rb rc w ya yb yc rb wb n a b ;
>> solve('va=ra*w*cos(ya)-r*wb*cos(n)','vb=rb*w*cos(yb)+r*wb*sin(a+n)','vc=rc*w*cos(yc)+r*wb*sin(b-n)','n,w,wb')
Warning:Explicit solution could not be found.
> In solve at 98
ans =
[ empty sym ]
>> syms va vb vc ra rb rc w ya yb yc rb wb n a b ;
>> solve('va=ra*w*cos(ya)-r*wb*cos(n)','vb=rb*w*cos(yb)+r*wb*sin(a+n)','vc=rc*w*cos(yc)+r*wb*sin(b-n)','n,w,wb')
Warning:Explicit solution could not be found.
> In solve at 98
ans =
[ empty sym ]
n是未知量的情况下,这不是三元一次方程.应该是非线性方程