5.求下列矩阵的主对角线元素、上三角阵、下三角阵、秩、范数、条件数和迹。

telephone number怎么读（用拼音表示）在线等,急! telephone number是什么意思 什么英文单词含有 Z和S z和s的发音怎么拼,它们的区别是什么,在单词里怎么分辩发z还是s? 单词后加s,什么情况下读/s/,什么情况读/z/? ____（close）your eyes and eye exercises. 帮忙英译汉.翻译软件不要进来A letter of credit is the witten promise of a bank to act at the request and on the instructions of the applicant and to undertake payment to the beneficiary in the amount specified in the credit,provided that 英语翻译很多人都很喜欢吃葡萄,颜色越深的葡萄营养价值越高.因为葡萄的颜色越深,色素类物质含量就越高.如果你吃葡萄的时候把葡萄皮吐了,那么吃葡萄就没什么营养了,尤其是紫葡萄,营养 英语翻译中国电影的国际发展策略研究 "s"发“3”的单词两个,如“usually" usually中S发什么音? 学奕解释 与use usually U音相同的单词还有哪些 谁有《学奕》的解释? 学奕的意思及注释 I am sorry I ______(forget) to bring your photos. why don't bring your homework to school today改错why don't bring your homework to school todaywhat are you listening at present 改错 墙上钟的滴答声 睡不着石英钟的指针走一下就有声音,听到声音就总是睡不着 怎么办 已经失眠几天了 求教“文广新局”的英文翻译 《学奕》的分析和讲解是什么? he is 17 years old .i am 14 years old.同义句 学奕中之字的解析 学奕 ：然 学奕读后感400字好的追加悬赏分100分 学奕读后感200字200字-240字刚才我看见过了？ 长江流域在9月出现什么情况,干旱少雨是错的那是什么?长江流域在9月出现什么情况,干旱少雨是错的那应该是怎样的情况? 英语翻译88/9 Mu1 Chaengwattana Rd.,Tungsonghong,Laksi,Bangkok 10210 Thailand he asked me ______________.选哪一个,为什么?a:if she will comeb:how many books I want to havec:they would help us to do itd:what was wrong with me He asked me ___A:what the word meanedB;what the word means选A还是B为什么? 【英语】He asked me ( )A.hoe much the shoes are B.how much the pair shoes is The new school year has just begun .Wen Tao,a student of a high school in Chongqing,has alreadyput up a poster at his school.He wants some ___memders for his school club ---an AGG ciub 请问有哪些特别好听的中文歌、英文歌、泰文歌.