Contact us
Choose a category below so we can get back to you as quickly as possible.
(x+1)^2+(y+1)^2=1 令x+1=cosa 則(y+1)^21-(cosa)^2=(sina)^2 sina的值域關於原點對稱 所以不妨令y+1=sina 所以x=cosa-1,y=sina-1 x+y=sina+cosa-2=√2sin(x+π/4)-2 -1
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.