Question: How to edit the tex generated by the maple:Put the one equation into several rows

How to edit the tex generated by the maple:Put the one equation into several rows

For example

This code p57.txt  can get the below picture

[IMG]http://i730.photobucket.com/albums/ww309/ytyyutianyun/1-13.png[/IMG]

But what I want is

[IMG]http://i730.photobucket.com/albums/ww309/ytyyutianyun/2-7.png[/IMG]

 

Thanks

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