3∧n-3∧(n+1)怎么化简?
3∧n-3∧(n+1)怎么化简?
(n+1)+n+(n-1)+(n-2)…+3+2+1怎么化简
(m+n)(m-n)/m+3n 怎么化简
3^n-3^(n-1)要怎么化简?
(3n+1)/(2n+1)怎么化简!
证明不等式:(1/n)^n+(2/n)^n+(3/n)^n+.+(n/n)^n
3根号n分之5n怎么化简
求极限:lim((2n∧2-3n+1)/n+1)×sin n趋于无穷
9n^2+3n-2怎样化简为(3n-1)(3n+2)
lim(n→∞)(3∧n-2∧n)/((3∧n+1)-(2∧n+1))
数列a(n)=n (n+1)(n+2)(n+3), 求S(n)怎么用高中数列原理解答?
设n>-1,且n≠1,比较n∧3+1与n∧2+n