Question

小学奥数题目，分数大小比较，请写出具体过程，非常感谢！

Answer 1

a^2 = 3/4 x 3/4 x 5/6 x 5/6 x 7/8 x 7/8 x ......x 19999/20000 x 19999/20000
< 3/4 x 4/5 x 5/6 x 6/7 x 7/8 x 8/9 x ..... x 19998/20000 x 20000/20001
= 3/20001
< 0.0001
a < 0.01

Answer 2

a^2 = 3/4 x 3/4 x 5/6 x 5/6 x 7/8 x 7/8 x ......x 19999/20000 x 19999/20000
< 3/4 x 4/5 x 5/6 x 6/7 x 7/8 x 8/9 x ..... x 19998/20000 x 20000/20001
= 3/20001
< 0.0001
a < 0.01
望采纳！祝好~

Answer 3

a小

Answer 4

a^2 = 3/4 x 3/4 x 5/6 x 5/6 x 7/8 x 7/8 x ......x 19999/20000 x 19999/20000
< 3/4 x 4/5 x 5/6 x 6/7 x 7/8 x 8/9 x ..... x 19998/20000 x 20000/20001
= 3/20001
< 0.0001
a < 0.01
方法都差不多啊