%比如，你定义一个x关于y的函数，y=x^2+5，用matlab求y关于x的函数程序为：symseqxyeq=x^2+5-y;solve(eq,x)%%%%%%%%%%%求得结果为(y-5)^(1/2)-(y-5)^(1/2)表示x=(y-5)^(1/2)或者x=-(y-5)^(1/2)
