英语翻译2*（1-n) 与 2-2n 怎么表达2 times 1 less than a number n is the same as twice the number increased by 14,what is "increased by 14" 是修饰谁的啊?我的列式是2(1-n)=2n+14.为什么不是2（1-n)=2(n+14)?如果是这个，怎

n/n+1与n+1/n+2比较大小 2^n/n*(n+1) 证明不等式：(1/n)^n+(2/n)^n+(3/n)^n+.+(n/n)^n (n+2)!/(n+1)! n(n+1)+(n+1)(n+2)+(n+2)(n+3).(n+2a)(n+2a+1)用一个代数式表示谢谢schumiandmassa 与guoshiqiangaxv的回答， 1/2n与 √(n^2)-n 比较大小,其中n大于2 t*=n/(2*n+1)与t=t*n/(2*n+1)的区别 已知n>2,试比较logn(n+1)与log(n-1)n的大小 [3n(n+1)+n(n+1)(2n+1)]/6+n(n+2)化简 [3n(n+1)+n(n+1)(2n+1)]/6+n(n+2)化简 化简n分之n-1+n分之n-2+n分之n-3+.+n分之1 化简n分之n-1+n分之n-2+n分之n-3+.+n分之1 f(x)=e^x-x 求证(1/n)^n+(2/n)^n+...+(n/n)^n 化简(n+1)(n+2)(n+3) n*【n+1】*【n+2】化简成什么? 2n/（n+1）n! n(n+1)(n+2)等于多少? n+(n-1)÷2×n 求化简