[NTG-context] Math equation with indentation

Aditya Mahajan adityam at umich.edu
Wed May 14 16:45:03 CEST 2008


On Wed, 14 May 2008, 302302 wrote:

>> On Tue, 13 May 2008, 302302 wrote:
>>
>>> Hi,
>>> I need to use a multieqaution in this form ( http://img233.imageshack.us/img233/2372/eqsx3.png ). I am mostly interested in the right brace and >the indentation after the "subject to". I tried to use mathmatrix but without success. Can you help me with it?>
>>
>> I am using nested matrices, but this is one case which will be best solved
>> by something equivalent for gathered and aligned. It has been on my todo
>> list for a long time.
>>
>> Here is a solution using nested matrices, where I use \noalign to fake
>> correct spacing after the first line (and changed the \cdots in the last
>> condition to \dots).
>>
>> \definemathmatrix[rightbrace][left={\left.},right={\,\right\}},n=1,align=left]
>>
>> \starttext
>>
>> \placeformula[+] \startformula
>> \startrightbrace
>>   \NC \min \{c_1 x_1 + c_2 x_2 + \cdots + c_n x_n \} \NR
>>       \noalign{\vskip 0.2em}
>>   \NC \text{subject to} \NR
>>   \NC \quad
>>       \startmathmatrix[n=9,align={middle,middle,middle,
>>         middle,middle,middle,right,middle,middle},
>>         distance=0.3em]
>>         \NC a_{11} x_1 \NC + \NC a_{12} x_2 \NC +
>>         \NC \cdots \NC + \NC a_{1n} x_n \NC = \NC b_1 \NR
>>         \NC a_{21} x_1 \NC + \NC a_{22} x_2 \NC +
>>         \NC \cdots \NC + \NC a_{2n} x_n \NC = \NC b_2 \NR
>>         \NC            \NC   \NC  \vdots    \NC
>>         \NC        \NC   \NC            \NC   \NC \vdots \NR
>>         \NC a_{m1} x_1 \NC + \NC a_{m2} x_2 \NC +
>>         \NC \cdots \NC + \NC a_{mn} x_n \NC = \NC b_m \NR
>>         \NC            \NC   \NC            \NC
>>         \NC        \NC
>>         \NC \llap{x_1,x_2,\dots,x_n} \NC \ge \NC 0.
>>       \stopmathmatrix \NR
>>   \stoprightbrace
>> \stopformula
>>
>> \stoptext
>>
>>
>> Aditya
>
> Great, thanks a lot! And is there any way how to get in the first line \min_{x \in X} with the parameter exactly below the "min"? Because in this  solution the parameter {x \in X} is on the right bottom, like in a line.

Add style=\displaystyle as an option in the definition of rightbrace.

Aditya



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