数列Xn有界,N趋近于无穷时Yn=0,证明N趋近于无穷时,Xn*Yn=0
数列Xn有界,N趋近于无穷时Yn=0,证明N趋近于无穷时,Xn*Yn=0
设数列{Xn}有界,又lim(n趋近于正无穷)Yn=0,证明:lim(n趋近于正无穷)XnYn=0
设数列Xn有界,lim(n趋近于无穷)Yn=0,证明lim(n趋近于无穷)XnYn=0
证明:lim(n趋近于无穷)yn=0等价于lim(n趋近于无穷)|yn|=0.
数列xn单调递增,yn单调递减,lim(xn-yn)=2(n趋向于正无穷),证明Xn Yn 皆收敛.
设数列{xn}有界,又limn->无穷yn=0,证明证明limXn.Yn=0,并由此结论求极限limn->无穷[n/(n
数列Xn有界,又数列Yn=0 (n趋近无穷大) 证明数列XnYn=0 (n趋近无穷大)
limxn=a lim(yn-xn)=0 则数列{yn} n趋于无穷
设数列Xn有界,limYn=o ,limn趋向于正无穷.证明limXn.Yn=0
“数列Xn,Yn满足lim(n->正无穷)Xn*Yn=0,若Xn有界则Yn必为无穷小 ” 这一命题正确吗 为什么
设数列{Xn}有界,又lim(n->正无穷)Yn=0,证明:lim(n->正无穷)XnYn=0.定义法
设数列{xn}有界,又lim(n趋向于无穷大)yn=0,证明:limxnyn=0