神马作文网mi66is 8n
-n^3+8n^2-16n
极限练习题lim(n->∞)[(n^2+3n-8)/(4n^2+2n+3)]
一道数列求和题1/2n+3/4n+5/8n+...+（2n-1）/n*2^n
(2^n+4^n+6^n+8^n)^(1/n)当n趋于无穷时的极限
计算1/(m-n)-1/(m+n)-2n/(m^2+n^2)-4n^3/(m^4+n^4)-8n^7/(m^8+n^8)
lim 3n^2--2n+8 /4--n^2 n-->无穷大 的极限 求过
lim(n→∞) 2的2n次方-8/4n次方+3n次方
若m n互为相反数 则(8m+2n)-(7n+n)的值为
m-{n+3n-[8m-(5n+2n)+3} 化简
n
求1.lim(3n-(3n^2+2n)/(n-1)) 2.lim(8+1/(n+1)) 3.lim根号n(根号(n+1)
M=(N-1)×1+(N-2)×2+(N-3)×4+(N-4)×8+(N-5)×16+(N-6)×32+(N-7)×64