(1) 求证:n
(1) 求证:n
求证:(1+1/n)^n
(1)求证 =(n+1)!/n+1
求证f(n+1)*f(n-1)-f(n)*f(n) = (-1)^n,f(n)是费波纳茨数列
求证:1/(n+1)+1/(n+2)+1/(n+3)+...+1/(3n+1)>25/24(n是正整数)
求证:(n+2002)(n+2003)(n+2004)(n+2005)+1是一个完全平方数(n为正整数)
求证 1/(n+1)+1(n+2)+.+1(3n+1)>1
求证lim(1+1/n+1/n2)n =e ( n→∞)
求证:对于自然数n有17/((3X5*2n+1)+(2*3n+1))
已知x>1,求证:x>ln(1+n).
求证1²+2²+3²+……+n²=(1/6*n(n+1)(2n+1))/n(n为
求证1^2/1.3+2^2/3.5+…+x^2/((2n-1)(2n+1))=(n(n+1)/(2(2n+1)),n属于