题目内容
a×
=b÷
=c+
,a,b,c都不为0,这三个数中最大的是
- A.a
- B.b
- C.c
A
分析:设a×
=b÷
=c+
=1,求出相应的a、b、c的值,即可比较出谁最大.
解答:a×
=b÷
=c+
=1,
则:a×
=1,a=![](http://thumb.1010pic.com/pic5/latex/33.png)
b÷
=1,b=![](http://thumb.1010pic.com/pic5/latex/365.png)
c+
=1,c=-
,
所以a最大.
故选:A.
点评:解答此题的关键是:先设整个式子等于1,再分别求出a、b、c的值,即可比较大小.
分析:设a×
![](http://thumb.1010pic.com/pic5/latex/168.png)
![](http://thumb.1010pic.com/pic5/latex/365.png)
![](http://thumb.1010pic.com/pic5/latex/1180.png)
解答:a×
![](http://thumb.1010pic.com/pic5/latex/168.png)
![](http://thumb.1010pic.com/pic5/latex/365.png)
![](http://thumb.1010pic.com/pic5/latex/1180.png)
则:a×
![](http://thumb.1010pic.com/pic5/latex/168.png)
![](http://thumb.1010pic.com/pic5/latex/33.png)
b÷
![](http://thumb.1010pic.com/pic5/latex/365.png)
![](http://thumb.1010pic.com/pic5/latex/365.png)
c+
![](http://thumb.1010pic.com/pic5/latex/1180.png)
![](http://thumb.1010pic.com/pic5/latex/96.png)
所以a最大.
故选:A.
点评:解答此题的关键是:先设整个式子等于1,再分别求出a、b、c的值,即可比较大小.
![](http://thumb2018.1010pic.com/images/loading.gif)
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