[Tex/LaTex] Flush to the left align environment in beamer

beamerhorizontal alignment

I would like to use the align environment within my beamer presentation, and have this flushed to the left. However, this should only be done on one frame, on the other frames I would like to keep the default settings.

How do I do this?

Best Answer

You can made use of the columns environment to divide the frame into two columns and then place the align environment on the left column. Then it is just matter of defining the width of the columns to define how much equations are placed on the left.

For example:

\documentclass{beamer} 
\usepackage{lmodern}
\usepackage{amsmath,amssymb}

\usetheme{EastLansing}

\begin{document}

\begin{frame}{Title}

Centered alignment:
\begin{align*}
&x+y=100\\
&z-x=10
\end{align*}

\begin{columns}[T]
\begin{column}{0.5\textwidth}
Left aligned equations:
\begin{align*}
&x+y=100\\
&z-x=10
\end{align*}
\end{column}
\begin{column}{0.5\textwidth}
\end{column}
\end{columns}
\vfill
\begin{columns}[T]
\begin{column}{0.35\textwidth}
Moreover:
\begin{align*}
&x+y=100\\
&z-x=10
\end{align*}
\end{column}
\begin{column}{0.65\textwidth}
\end{column}
\end{columns}

\end{frame}
\end{document}

will lead to:

enter image description here

Related Solutions

[Tex/LaTex] Right flush text in math environment

In many situations, a comment can be added in the following way:

\begin{align*}
A &= B && \text{(because pigs fly)} \\
  &= C && \text{(since donkeys are not pigs)} \\
  &= D && \text{(because I say so)}
\end{align*}

so that the comments are (left) aligned to each other. However, your case is different: the comment would be only in the last two lines and the fifth one is quite long. The fifth line makes it hard to set the comments so they stick out as such.

Probably the most amenable solution is to defer the comments to the text below the alignment. These are tough decisions, anyway. What about this?

\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{align*}
\makebox[2.8em][l]{$\displaystyle P(X_l=x_l,\ldots ,X_{l+k}=x_{l+k})$} \\
  &= \int_0^1 f(x_l)\cdots f(x_{l+k})\,dp\\
  &= \int_0^1 \prod_{i=1}^k p^{1\{x_i=1\}}(1-p)^{1\{x_i=0\}}\,dp\\
  &= \int_0^1 p^t(1-p)^{k-t}dp\\
  &= \int_0^1 p^{t+1-1}(1-p)^{k-t+1-1}\,dp\\
  &= \dfrac{\Gamma(k-t+1)\Gamma(t+1)}{\Gamma(k+2)}\int_0^1\dfrac{\Gamma(k+2)}{\Gamma(k-t+1)\Gamma(t+1)} p^{t+1-1}(1-p)^{k-t+1-1}\,dp\\
  &= \dfrac{\Gamma(k-t+1)\Gamma(t+1)}{\Gamma(k+2)} \\
  &= \dfrac{t!(k-t)!}{(k+1)!}
\end{align*}
Notice that the last integral is $\Gamma(t+1,k-t+1)$ and $k$ is an integer.
\end{document}

enter image description here

[Tex/LaTex] Tikz picture, align left in column using beamer

The figure environment appears to be serving no purpose in your example, so you could simply delete it, however you can use \flushleft to override the default centering in figure if you need to.

enter image description here

\documentclass{beamer}
\begin{document}


\begin{frame}
\begin{columns}[t]
\begin{column}{.5\textwidth}
XXX

\begin{figure}
YYY
\end{figure}
\begin{figure}\flushleft
ZZZ
\end{figure}
\end{column}
\begin{column}{.5\textwidth}
XXX
\end{column}
\end{columns}
\end{frame}
\end{document}

Best Answer

Related Solutions

[Tex/LaTex] Right flush text in math environment

[Tex/LaTex] Tikz picture, align left in column using beamer

Related Question