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DASD-537
"相关结果约100,000,000个
DASD-143 ,DASD-130,DASD-125,DASD-108
解: 增广矩阵 = 1 -3 4 1 2 -1 3 2 1 -2 3 λ-1 r2-2r1,r3-r1 1 -3 4 1 0 5 -5 0 0 1 -1 λ-2 r2*(1/5), r1+3r2,r3-r2 1 0 1 1 0 1 -1 0 0 0 0 λ-2 所以λ=2时方程组有解 此时方程组的通解为: (1,0,0)^T+c...
...dasd bjdds bsabdwu busa bsuai biuawuibduiibbf xzn buasduwodkaskle ghzuatwtesdjd zklckjlkjw 210udaslk 已赞过 已踩过< 你对这个回答的评价是? 评论 收起
小狗咔咔内部独有密封圈密封,更是充分的保证了吸尘器永不气,其过滤系统使用了全网独有Xywadasd技术,将边框软胶融为一体,离心胶融压铸技术确保可搓揉水洗,柔软牢固。非常简便的清洁方式让小狗咔咔D-988做到了真正的无耗材。同时,D-988的大滚轮履带框式设计,选用了材质更柔软的TPE材质,充分呵护您...
print('dasda' not in dic) =True 5、删除 第一种:del dic['name'] 第二种:res=dic.pop('name') //根据key删除,有返回值,返回值为key对应的value值 第三种:res=dic.popitem() //随机删,返回值是(key:value),返回值格式是元组 6、键keys(),值values(),键值对items() print(dic.keys()) =di...
(明显).AlsNianinderbestimmtenNachtwiederwieindenJahrenzuvorindasDorfeindrang(窜人),saheranjedemHausroteFarbeundFeuervordenHaeusern.Dazuerklang(响起)derLaermderTrommelnundderGongs.Alldieserschreckteihn.Nianfloh(逃走)ohneBeute.DieNachtgingvorbei,ohnezurueckzukehren.AlsderMorgendaemmerte(天明),wussten...
首先可以看出x-1是该式的一个一次因式,那么问题转化为5x^2-5kx+(66k-1)可以分解成两个一次因式求整数k 设5x^2-5kx+(66k-1)=5(x-a)(x-b)=5x^2-5(a+b)+5ab,其中a、b为整数,故a+b=k,5ab=66k-1--->5a(k-a)=66k-1--->k=(5a^2-1)/(5a-66)为整数 ...
Friendship is one of the best things a person can enjoy. It’s very difficult to find a better word to describe friendship. A true friend shares pleasure in our joy and sorrow in our sadness. In times of danger, he or she is always at our side to give us his or her ...