(4*k^3+11k+12*k^2+3)/(k+1)怎么化简到4(k+1)^2-1?
(4*k^3+11k+12*k^2+3)/(k+1)怎么化简到4(k+1)^2-1?
[k(k+1)/12](3k^2+11k+10)+(k+1)(k+2) 怎么化简
求证:lim1^k+2^k+3^k+4^k+.n^k/n^(k+1)=1/k+1
1k、2k、3k是什么意思
4k^2-4(k+1)(k-3)
[k*(2-4k)/(1+2k)]+2k+1
1^k+2^k+3^k+4^k+5^k.+n^k数列和公式的推导
K-1+K+2+K/3+K*3=2001
请问1^k+2^k+3^k+.+n^k=?
3×k×k-2k-1=-1.k等于
1^k+2^k+3^k+.+n^k 有无表达式
4k^3+6k^2+k+1=0.求K~