求一道数学题的答案(附过程)急急急!!!!!!!!
4/5×6/7×8/9×......1000000/1000001的积与0.002比较,哪个大?在回答问题时请给我这道题的计算过程。谢谢~...
4/5×6/7×8/9×......1000000/1000001的积与0.002比较,哪个大?
在回答问题时请给我这道题的计算过程。谢谢~ 展开
在回答问题时请给我这道题的计算过程。谢谢~ 展开
3个回答
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解:因为
4/5×6/7×8/9×......1000000/1000001<5/盯罩伏6×7/8×9/10......1000001/1000002
所以
(4/5×6/7×8/9×......1000000/1000001)^2<(4/5×6/7×8/9×......1000000/1000001)凯携×(5/6×7/8×9/10......1000001/1000002)
=4/1000002=2/500001<2/500000=1/闷帆250000=(1/500)^2
即 4/5×6/7×8/9×......1000000/1000001<1/500=0.002
4/5×6/7×8/9×......1000000/1000001<5/盯罩伏6×7/8×9/10......1000001/1000002
所以
(4/5×6/7×8/9×......1000000/1000001)^2<(4/5×6/7×8/9×......1000000/1000001)凯携×(5/6×7/8×9/10......1000001/1000002)
=4/1000002=2/500001<2/500000=1/闷帆250000=(1/500)^2
即 4/5×6/7×8/9×......1000000/1000001<1/500=0.002
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