-765/360≤k≤45/360怎么解得K=-2 K=-1?
k²+k=2怎么解?
k²-k≠2k 怎么解得 k≠0 k≠3
请问1^k+2^k+3^k+.+n^k=?
3×k×k-2k-1=-1.k等于
K-1+K+2+K/3+K*3=2001
证明(K/K+1)+{1/(K+1)(K+2)}=(K+1)/K+2
|3k-2+2k-3|/根号下k^2+1=1怎么解?
求证:lim1^k+2^k+3^k+4^k+.n^k/n^(k+1)=1/k+1
联立得 (k+1)²-2(k+2) = 6 ,k = ±3
(k+1)²=k²+2k+1,改变公式的写法,得
当k等于?时,3k(2k-5)+2k(1-3k)=52
代数式K/K-5-2与K+1/K的值互为相反数,则K=?