Contact us
Choose a category below so we can get back to you as quickly as possible.
式は(x-1)^2+(y-1/2)^2=0なので、x=1,y=1/2なので、x^2-xy-y^2=-1/4
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.