Contact us
Choose a category below so we can get back to you as quickly as possible.
存在x的平方加aX减4a小於0 該命題的否定為:對任意x∈R,有x的平方加aX减4a>=0為真命題 則判別式=a^2+16a
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.