有关matlab中函数参数为方程的问题

Question

使用牛顿迭代法求解方程的根，我在函数中想输出方程作为提示信息，如图：

但是在命令行中，输入函数之后出现错误：

请问应该怎么解决？谢谢

Answer 1

MATLAB中如何实现输出一个函数表达式：

https://www.docin.com/p-660580296.html#:~:text=%E6%89%80%E4%BB%A5%E6%88%91%E6%83%B3%E8%AF%B7%E9%97%AE%E5%9C%A8%20MATLAB%E4%B8%AD%E6%80%8E%E6%A0%B7%E5%AE%9E%E7%8E%B0%E7%9B%B4%E6%8E%A5%E8%BE%93%E5%87%BA%E4%B8%80%E4%B8%AA%E5%87%BD%E6%95%B0%E8%A1%A8%E8%BE%BE%E5%BC%8F%EF%BC%8C%E8%B0%A2%E8%B0%A2%EF%BC%81%20%E7%AD%94%E6%A1%881%EF%BC%9A%EF%BC%9A%201%E3%80%81%E5%BE%88%E7%AE%80%E5%8D%95%E5%95%8A.%202%E3%80%81%E6%AF%94%E5%A6%82%E6%88%91%E4%BB%AC%E8%BE%93%E5%87%BA%E4%B8%80%E4%B8%AA%E5%87%BD%E6%95%B0f%3DA%2Asin%20%28x%29-B%2Aexp%20%28C%2Ax%29%E8%BF%99%E7%A7%8D%E8%A1%A8%E8%BE%BE%E5%BC%8F%2CA%2CB%2CC%20%E6%98%AF%E4%BD%A0%E8%BE%93%E5%85%A5%E7%9A%84%E4%BB%BB%E4%BD%95%E5%8F%82%E6%95%B0.,syms%20f%3DA%2Asin%20%28x%29-B%2Aexp%20%28C%2Ax%29%3Bend%20%282%29%E7%8E%B0%E5%9C%A8%E4%BD%A0%E7%9B%B4%E6%8E%A5%E5%9C%A8%E5%91%BD%E4%BB%A4%E7%AA%97%E5%8F%A3%E8%BE%93%E5%85%A5%E5%91%BD%E4%BB%A4dispf%E5%B0%B1%E5%8F%AF%E4%BB%A5%E4%BA%86%2C%E6%AF%94%E5%A6%82%20dispf%20%2812%2C36%2C78%29ans%20%E6%8F%90%E9%97%AE%E8%80%85%E7%9A%84%E8%AF%84%E4%BB%B7%EF%BC%9A%E8%B0%A2%E8%B0%A2%E4%BD%A0%EF%BC%81