1-2+3-4+5-6+k+99-100
1^k+2^k+3^k+4^k+5^k.+n^k数列和公式的推导
4k^3+6k^2+k+1=0.求K~
1-2+3-4+5-6+k+99-100
c语言 求1^k+2^k+3^k+……+n^k,假定n=6,k=4
求证:lim1^k+2^k+3^k+4^k+.n^k/n^(k+1)=1/k+1
当k等于?时,3k(2k-5)+2k(1-3k)=52
k^4+2k^2-6k-3=0
4k^2-4(k+1)(k-3)
计算2/(k+1)(k+3) +2/(k+3)(k+5)+…+2/(k+2003)(k+2005)
解方程:{(2-3k)/(k+1)-(3k+2)/(1-k)}的平方+{(5k)/(k+1)-(5k)/(1-k)}的平
int k=2; switch(k+1) {case 3:k+=1; case 4:k--;break; case 5:
1k、2k、3k是什么意思