Contact us
Choose a category below so we can get back to you as quickly as possible.
你的提問我大概明白了什麼意思,現誤導的現象很正常,不是你所說的那樣,那兩個不等式是二者必居其一. .原不等式可化為. .(2-a)x>-5,因為此不等的解是x
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.