请各位老师帮我看看计算:(1-1/2²)(1-1/3²)(1-1/4²).(1-1/9²)(1-1/10²)
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/27 04:17:27
![请各位老师帮我看看计算:(1-1/2²)(1-1/3²)(1-1/4²).(1-1/9²)(1-1/10²)](/uploads/image/z/7163983-55-3.jpg?t=%E8%AF%B7%E5%90%84%E4%BD%8D%E8%80%81%E5%B8%88%E5%B8%AE%E6%88%91%E7%9C%8B%E7%9C%8B%E8%AE%A1%E7%AE%97%EF%BC%9A%EF%BC%881-1%2F2%26%23178%3B%EF%BC%89%EF%BC%881-1%2F3%26%23178%3B%EF%BC%89%EF%BC%881-1%2F4%26%23178%3B%EF%BC%89.%EF%BC%881-1%2F9%26%23178%3B%EF%BC%89%EF%BC%881-1%2F10%26%23178%3B%EF%BC%89)
x){~ -Ohh|u:&>
D/-|n=057RS64~*`.`ЃX+14$"OkG|0l[
Cmњ`1R
3A2|@@9K
:EF&&S*
-+A*We@IKD!H!
F 1M W
请各位老师帮我看看计算:(1-1/2²)(1-1/3²)(1-1/4²).(1-1/9²)(1-1/10²)
请各位老师帮我看看
计算:(1-1/2²)(1-1/3²)(1-1/4²).(1-1/9²)(1-1/10²)
请各位老师帮我看看计算:(1-1/2²)(1-1/3²)(1-1/4²).(1-1/9²)(1-1/10²)
(1-1/2²)(1-1/3²)(1-1/4²).(1-1/9²)(1-1/10²)
=(1+1/2)(-1/2)(1+1/3)(1-1/3)(1+1/4)(1-1/4)……(1+1/9)(1-1/9)(1+1/10)(1-1/10)
=3/2x4/3x5/4x……x10/9x11/10x1/2x2/3x3/4x……x8/9x9/10
=11/2x1/10
=11/20