试题 试卷
题型:解答题 题类:常考题 难易度:普通
(Ⅰ)求m的值;
(Ⅱ)若a,b均为正实数,且满足a+b=m,求a2+b2的最小值.
(Ⅰ)(a+b)(a5+b5)≥4;
(Ⅱ)a+b≤2.
(Ⅱ)若正实数a,b,c满足 ,求证:a+2b+3c≥3.
试题篮