1个回答
展开全部
y = (1+x) / (1-x)^(1/2)
= [ 2-(1-x)]/ (1-x)^(1/2)
= 2*(1-x)^(-1/2)- (1-x)^(1/2)
y(100)
= [ 2*(1-x)^(-1/2)- (1-x)^(1/2) ] (100)
= 2 *[(1-x)^(-1/2)](100) - [(1-x)^(1/2)](100)
= 2 *(-1/2)(-3/2)...(-199/2)(1-x)^(-201/2)]
- (1/2)(-1/2)(-3/2)...(-197/2)[(1-x)^(-199/2)]
= 199!!/2^99 * (1-x)^(-201/2) + 197!!/2^100*[(1-x)^(-199/2)]
= [ 2-(1-x)]/ (1-x)^(1/2)
= 2*(1-x)^(-1/2)- (1-x)^(1/2)
y(100)
= [ 2*(1-x)^(-1/2)- (1-x)^(1/2) ] (100)
= 2 *[(1-x)^(-1/2)](100) - [(1-x)^(1/2)](100)
= 2 *(-1/2)(-3/2)...(-199/2)(1-x)^(-201/2)]
- (1/2)(-1/2)(-3/2)...(-197/2)[(1-x)^(-199/2)]
= 199!!/2^99 * (1-x)^(-201/2) + 197!!/2^100*[(1-x)^(-199/2)]
来自:求助得到的回答
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询
广告 您可能关注的内容 |