這道題確實難， 學習以上諸位的解答，感覺證明不等式需要懂得何時微量釋放預算，跳過門檻，變換原題；想等效變換一步到位，很難

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.

Copyright ©1998-2024 wenxuecity.com All rights reserved. Privacy Statement & Terms of Use & User Privacy Protection Policy