Contact us
Choose a category below so we can get back to you as quickly as possible.
,設X1和X2為區間(負無窮,正無窮)上任意兩個值,是X1X1 所以X2-X1>0,且根號(X2^2+1)+根號(X1^2+1)>0 又任意X屬於實數,都有根號(X2^2+1)>根號X的平方=絕對值X>=X 所以X-根號(X1^2+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.