(1/2)x,-(2/3)x^2,(3/4)x^3,-(4/5)x^4,(5/6)x^5……,你能写出第10个单项式吗?第n个单项式呢?
问题描述:
(1/2)x,-(2/3)x^2,(3/4)x^3,-(4/5)x^4,(5/6)x^5……,你能写出第10个单项式吗?第n个单项式呢?
答
-(10/11)x^10n个:-1^n+1(n/n+1)x^n错误