求函数f[g(x)]的反函数与求f-1[g(x)]，许多人把它们看成一回事，因而在或题时会发生这样或那样的错误．求f[g(x)]的反函数是求复合函数的反函数，其反围数的复合过程恰好与原函数相反，即y而求f-1[g(x)]是在求出x=f(x)的反函数广f-1(x)之后，再求出反函数的复合函数．二者过程 Finding the inverse function of the function f[g(x)] and f-1[g(x)], many people think of them as one thing, so that one or more mistakes occur in or. To find the inverse function of f[g(x)] is to find the inverse function of the compound function. The compound process of the anti-surround number happens to be the opposite of the original function, ie, y and f-1[g(x)] is to find x. After the inverse function of =f(x) is wide f-1(x), the complex function of the inverse function is then found. Both processes