Contact us
Choose a category below so we can get back to you as quickly as possible.
令a=x² 則a>=0 原式=4a(6-a) =-4(a²-6a) =-4[(a-3)²-9] a>=0 所以a=3 原式最大值=-4×(-9)=36
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.