[OS X TeX] Working right with subequations

Christian Burk maillists at gmx.de
Tue Jan 2 13:30:54 EST 2007


I would like to use the subequations feature of amsmath.

I have an equation environment with \label{eq:1} and this equation is  
numbered with 0.1.
Afterwards I have the subequations environment consisting of two  
equations with \label{eq:1A} and \label{eq:1B}, but these two  
equations are numbered 0.2a and 0.2b.

How could I achieve that the equations with the label 1A and 1B get  
the number 0.1a and 0.1b?

Here is a picture of te status quo..

and here my example...



\begin{equation} \label{eq:1}
\underline{M} \ \underline{\ddot{u}} + \underline{C} \ \underline{\dot 
{u}} + \underline{S} \ \underline{u} = \underline{f}

     u &= \left(\begin{array}{c}u_1 \\ \vdots \\ u_k \\ \vdots \\ u_N 
\end{array}\right) \label{eq:1A} \\
     u &= \left(\begin{array}{c}u_2 \\ \vdots \\ u_k \\ \vdots \\ u_N 
\end{array}\right) \label{eq:1B}



Thanks in advance

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