问题
选择题
已知a，b为不相等的正数，A=a
|
答案
A-B=(a
| a |
| b |
| b |
| a |
=a(
| a |
| b |
| a |
| b |
=(
| a |
| b |
=(
| a |
| b |
| a |
| b |
因为a，b为不相等的正数，所以(
| a |
| b |
| a |
| b |
所以A＞B．
故选A．
搜题请搜索小程序“爱下问搜题”
已知a，b为不相等的正数，A=a
|
A-B=(a
| a |
| b |
| b |
| a |
=a(
| a |
| b |
| a |
| b |
=(
| a |
| b |
=(
| a |
| b |
| a |
| b |
因为a，b为不相等的正数，所以(
| a |
| b |
| a |
| b |
所以A＞B．
故选A．