Contact us
Choose a category below so we can get back to you as quickly as possible.
所以 f(-x)-g(-x)=x^2+x 所以 -f(x)-g(x)=x^2+x f(x)+g(x)=-x^2-x② f(x)-g(x)=x^2-x① ①+②得 2f(x)=-2x f(x)=x帶入① 得 x-g(x)=x^2-x g(x)=-x^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.