观察下列各式然后回答问题: 1-1⼀2^2=1⼀2*2⼀3, 1-1⼀3^2+2⼀3*4⼀3, 1-1⼀4^2=3⼀4*5⼀4, (1) 根据上述规律填空:

2024-12-01 02:53:46
推荐回答(1个)
回答(1):

(1)
1-1/100^2=(99/100*101/100),1-1/2011^2=(2010/2011*2012/2011)
2)用你发现的规律计算:
(1-1/2^2)*(1-1/3^2)*......*(1-1/2010^2)*(1-1/2011^2)
=1/2*3/2*2/3*4/3*3/4*.....*2010/2011*2012/2011
=1/2*2012/2011
=1006/2011