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(2009•枣庄)定义:a是不为1的有理数,我们把称为a的差倒数.如:2的差倒数...
(2009•枣庄)定义:a是不为1的有理数,我们把
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230827891560789/SYS201310212308278915607005_ST/0.png)
称为a的差倒数.如:2的差倒数是
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230827891560789/SYS201310212308278915607005_ST/1.png)
,-1的差倒数是
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230827891560789/SYS201310212308278915607005_ST/2.png)
.已知a
1=-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230827891560789/SYS201310212308278915607005_ST/3.png)
,a
2是a
1的差倒数,a
3是a
2的差倒数,a
4是a
3的差倒数,…,依此类推,a
2009=
.
考点分析:
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