化简:(1-1/2²)(1-1/3²)(1-1/4²)...(1-1/99²)(
来源:学生作业帮 编辑:搜搜考试网作业帮 分类:数学作业 时间:2024/06/23 20:34:42
化简:(1-1/2²)(1-1/3²)(1-1/4²)...(1-1/99²)(1-1/100²)
![化简:(1-1/2²)(1-1/3²)(1-1/4²)...(1-1/99²)(](/uploads/image/z/6939307-19-7.jpg?t=%E5%8C%96%E7%AE%80%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%2F99%26%23178%3B%EF%BC%89%EF%BC%88)
=(2²-1)/2²(3²-1)/3²(4²-1)/4²...(99²-1)/99²(100²-1)/100²
=(2-1)(2+1)/2²(3-1)(3+1)/3²(4-1)(4+1)/4²...(99-1)(99+1)/99²(100-1)(100+1)/100²
=(1·3)/2²(2·4)/3²(3·5)/4²...(98·100/99²(99·101)/100²
=1/2·101/100=101/200
=(2-1)(2+1)/2²(3-1)(3+1)/3²(4-1)(4+1)/4²...(99-1)(99+1)/99²(100-1)(100+1)/100²
=(1·3)/2²(2·4)/3²(3·5)/4²...(98·100/99²(99·101)/100²
=1/2·101/100=101/200
化简:(1-1/2²)(1-1/3²)(1-1/4²)...(1-1/99²)(
(1-1/2²)(1-1/3²)(1-1/4²)……(1-1/10²)
(1)利用因式分解计算:1-2²+3²-4²……+99²-100²+1
(1-2²)+3²-4²+5²-6²+7²-8²+
计算:(1²-2²/1+2)+(2²-3²/2+3)+…+(99²-1
(1²+3²+…+99²)-(2²+4²+…+100²)=?
用简便方法计算 (1/2²-1)(1/3²-1)(1/4²-1)...(1/10²
(1-1/2²)(1-1/3²)(1-1/4²)...(1-1/9²)(1-1/
(2X²-1/2+3X)-4(X-X²+1/2)化简
(1-2²/1)(1-3²/1)(1-4²/1)…(1-9²/1)(1-10
利用因式分解计算:(1-1/2²)(1-1/3²)(1-1/4²)
(1-1/2²)×(1-1/3²)×.×(1-1/9²)(1-1/10²)=