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用matlab求解隐函数,老是出现问题,请问是怎么回事啊?>>a=1;>>subs(solve('cos(x)=(a*x)','x'))Errorusing==>solveUnabletofindclosedformsolution.

题目详情
用matlab求解隐函数,老是出现问题,请问是怎么回事啊?
>> a=1;
>> subs(solve('cos(x)=(a*x)','x'))
Error using ==> solve
Unable to find closed form solution.
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答案和解析
solve(subs('cos(x)=(a*x)','a',1), 'x')