Contact us
Choose a category below so we can get back to you as quickly as possible.
一個函數要有反函數就必須是一一映射的,偶函數不是一一映射的,所以沒有反函數. 偶函數一個f(x)的取值對映兩個x值..所以不是一一映射.
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.