I have an align-environment and basically want all the Z's and all the signs (+-) left-aligned + all centered + the smallest possible/sane gap in between + numbering + labels (if possible):
Produced by the code:
I have:
\begin{align}
& Z_i(f) = R_i(f) & + i \cdot X_i(f) \label{eq:Zi} & \\
& Z_R(f)=R & +i\cdot 0 \label{eq:ZR} & \\
& Z_L(f)=0 & +i \cdot \underbrace{ 2 \pi f L }_{X_L} \label{eq:ZL} & \\
& Z_C(f)=0 & -i \cdot \underbrace{ \frac{1}{2 \pi f \cdot C} }_{X_C} & \label{eq:ZC}
\end{align}
I want:
\begin{align}
& Z_i(f) = R_i(f) & & + i \cdot X_i(f) \label{eq:Zi} & \\
& Z_R(f)=R & & +i\cdot 0 \label{eq:ZR} & \\
& Z_L(f)=0 & & +i \cdot \underbrace{ 2 \pi f L }_{X_L} \label{eq:ZL} & \\
\phantom{\hspace{5cm}} & Z_C(f)=0 & & -i \cdot \underbrace{ \frac{1}{2 \pi f \cdot C} }_{X_C} & \label{eq:ZC} \phantom{\hspace{5cm}}
\end{align}
Now I feel that the second code is not very nice (e.g. it will need adjustment of the phantom-spacing each time something is changed). Also the number of the last formula is at the wrong place.
Anyone have any suggestions?
Best Answer
You want
alignat
: