an+emerging+body+of

赫叙琦2254请问3的三次方+4的三次方+5的三次方+6的三次方+7的三次方=多少啊?要巧算的啊!注意注意!先回答的为最佳答案啊!要过程的啊! -
孔蚁寒13032619750 ______[答案] 1^3+2^3+3^3+……+n^3=一个数的平方【通项忘了,由an=2(an-1)-(an-2)+1,可以算】这个数依次是1 3 6 10 15 21 28…… 所以答案是28^2-1-8=775

赫叙琦2254三角形ABC的三边为a.b.c,当三角形ABC为锐角三角形时和当三角形为钝角三角形时,a^2+b^2与c^2的关系是...三角形ABC的三边为a.b.c,当三角形ABC为... -
孔蚁寒13032619750 ______[答案] 余弦定理a^2 = b^2 + c^2 - 2·b·c·cosA b^2 = a^2 + c^2 - 2·a·c·cosB c^2 = a^2 + b^2 - 2·a·b·cosC, 所以,锐角三角形a^2+b^2>c^2 钝角三角形a^2+b^2

赫叙琦2254emerging - nanoelectronics是什么意思 -
孔蚁寒13032619750 ______[答案] emerging-nanoelectronic 纳电子学

赫叙琦2254a和an的用法 -
孔蚁寒13032619750 ______ a后加副音字母开头的单词,an后加元音字母开头的单词.求采纳!

赫叙琦2254英语翻译Emerging from the 1980 census is the picture of a nation developing more and more regional competition,as population growth in the Northeast and ... -
孔蚁寒13032619750 ______[答案] 这是一个含有从句的复合句.as作“因为'讲引导一个原因状语从句.主句是一个主系表的结构.主语就是动名词短语“Emerging from the 1980 census”,表语是“the picture of a nation”,“developing more and more regio...

赫叙琦2254合并同类项:5(a+b)的平方—(a+b)+2(a+b)的平方+4(a+b)+(a+b)的立方 -
孔蚁寒13032619750 ______ =7(a+b)^2+3(a+b)+(a+b)^3

赫叙琦2254考研英语!求这句话的正常语序?Emerging from the 1980 census is the picture of a nation developing more and more regional competition,as population ... -
孔蚁寒13032619750 ______[答案] 1998年考研真题阅读第4篇第一句; 正常语序: As population growth in the Northeast and Midwest reaches a near standstill,Census emerging from the 1980 is the picture of a nation developing more and more regional competition. 翻译: 由于东北部...

赫叙琦2254...government bonds.More than 40 percent of the fund's holdings are high - quality,AAA - rated bonds.Year to date,the fund is up 24 percent,and it has returned an ... -
孔蚁寒13032619750 ______[答案] 仅供参考! 联博全球债券(ANAGX).该基金平均分裂美国和非美国债券的投资,包括政府债券大幅比重.超过40基金持有... 在这四家上市基金,这一项最国际化的风险.约70邓普顿环球债券的资产额的百分之投资于外国政府债券,新兴市场投资组合...

赫叙琦2254an emerging body of research shows that是什么意思 -
孔蚁寒13032619750 ______ 问题:an emerging body of research shows that 翻译答案:一个新兴的研究表明

赫叙琦2254an emerging body of research的翻译 -
孔蚁寒13032619750 ______ 意思是:一个新兴的研究机构 望采纳,有不会的问我~~