Contact us
Choose a category below so we can get back to you as quickly as possible.
先把題目搞清楚啊 懷疑題目似為:f(x-1/x)=x^2+1/x^2 若如此,只須配方:f(x-1/x)=(x-1/x)^2+2,囙此f(x)=x^2+2
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.