初一数学(1+1/1*3)*(1+1/2*4)*(1+1/3*5)*(1+1/4*6)*...*(1+1/97*99)*
来源:学生作业帮 编辑:百度作业网作业帮 分类:数学作业 时间:2024/06/17 00:23:13
初一数学(1+1/1*3)*(1+1/2*4)*(1+1/3*5)*(1+1/4*6)*...*(1+1/97*99)*(1+1/98*100)
(1+1/1*3)*(1+1/2*4)*(1+1/3*5)*(1+1/4*6)*...*(1+1/97*99)*(1+1/98*100)
本人快疯了!
(1+1/1*3)*(1+1/2*4)*(1+1/3*5)*(1+1/4*6)*...*(1+1/97*99)*(1+1/98*100)
本人快疯了!
![初一数学(1+1/1*3)*(1+1/2*4)*(1+1/3*5)*(1+1/4*6)*...*(1+1/97*99)*](/uploads/image/z/2348866-10-6.jpg?t=%E5%88%9D%E4%B8%80%E6%95%B0%E5%AD%A6%281%2B1%2F1%2A3%29%2A%281%2B1%2F2%2A4%29%2A%281%2B1%2F3%2A5%29%2A%281%2B1%2F4%2A6%29%2A...%2A%281%2B1%2F97%2A99%29%2A)
=(2*2)/(1*3)*(3*3)/(2*4)*(4*4)/(3*5)*(5*5)/(4*6)*******(99*99)/(98*100)
=(2方*3方****99方)/(1*2*3方****99*100)
=(2方*99方)/(1*2*99*100)
=2*99/100
=1.98
=(2方*3方****99方)/(1*2*3方****99*100)
=(2方*99方)/(1*2*99*100)
=2*99/100
=1.98