Math & Science ⇒ Block of Equations Alignment \begin{equation*}

[Darkoni]

HI!

Please, help me with finishing document with some physics formulas.

All what has to be done is to align by equal sign.

Please, see the pictures.

current.png (45.88 KiB) Viewed 11539 times

desired.png (48.02 KiB) Viewed 11539 times

Code: Select all

\documentclass{article}

\usepackage[most]{tcolorbox}

\pagenumbering{gobble}

\begin{document}

\begin{equation*}
	\bar {v} = \frac{s_{uk}}{t_{uk}}
\end{equation*}

\begin{equation*}
	\left.\begin{aligned}
		s_{uk} &= s_1 + s_2 \\
		t_{uk} &= t_1 + t_2 
	\end{aligned}
	\right\}
	\quad \bar{v} = \frac{s_1 + s_2}{t_1+t_2}
\end{equation*}

\bigskip

\begin{equation*}
	\left.\begin{aligned}
		s_1 &= v_1 \cdot t_1 \\
		s_2 &= v_2 \cdot t_2
	\end{aligned}
	\right\}
	\quad t_{uk} \cdot \bar{v} = v_1 \cdot t_1 + v_2 \cdot t_2
\end{equation*}

\bigskip

\centerline{	\color[HTML]{DD0000}{\textbf{Current document}}}

\bigskip

%\centerline{ \color[HTML]{00BB00}{\textbf{Desired centered equations}}}

\end{document}

Many thanks!

Darko

PS: Stefan, many thanks for explaining me about attachments - i did not see tab. Silly me

[Stefan Kottwitz]

Hi Darko,

welcome to the forum!

The imgshare.io links are dead, no images there. But you can post the images here as attachments. The "Attachments" link is below the text edit field, when you write a post.

Stefan

[Bartman]

The content of the last equation environment is different from the output in the attached figures.

You can replace the three equation environments by an alignat environment.

The mathmode document by Mr. Voß on CTAN may help to understand how this and other environments of the mathematical mode work.

[Darkoni]

Hi Bartman

Thanks for answer.

And the equation is in did different, as i wish to show that before equal sign ( = ) could be more variables...

I did not take another screenshot. Sorry for that.

And, i really do not know how to implement alignat as after i add

Code: Select all

\begin{alignat}{2}

and

Code: Select all

\end{alignat}

i get an error.

Also, how to specify i wish to align on = ?

Again, here are equations that i wish to align on = sign.

Code: Select all

\begin{equation*}
	\bar {v} = \frac{s_{uk}}{t_{uk}}
\end{equation*}

\begin{equation*}
	\left.\begin{aligned}
		s_{uk} &= s_1 + s_2 \\
		t_{uk} &= t_1 + t_2 
	\end{aligned}
	\right\}
	\quad \bar{v} = \frac{s_1 + s_2}{t_1+t_2}
\end{equation*}

\bigskip

\begin{equation*}
	\left.\begin{aligned}
		s_1 &= v_1 \cdot t_1 \\
		s_2 &= v_2 \cdot t_2
	\end{aligned}
	\right\}
	\quad t_{uk} \cdot \bar{v} = v_1 \cdot t_1 + v_2 \cdot t_2
\end{equation*}

Darko

[Bartman]

Please post a complete minimal working example with the added alignat environment (in your case the starred version) that generates the error message.

[Darkoni]

current.png (35.72 KiB) Viewed 11514 times

centered.png (38.62 KiB) Viewed 11514 times

Here is the code, with remarked \begin{alignat} and \end{alignat}

Code: Select all

\documentclass{article}

\usepackage[most]{tcolorbox}

\pagenumbering{gobble}

\begin{document}

% \begin{alignat}

\begin{equation*}
	\bar {v} = \frac{s_{uk}}{t_{uk}}
\end{equation*}

\begin{equation*}
	\left.\begin{aligned}
		s_{uk} &= s_1 + s_2 \\
		t_{uk} &= t_1 + t_2 
	\end{aligned}
	\right\}
	\quad \bar{v} = \frac{s_1 + s_2}{t_1+t_2}
\end{equation*}

\bigskip

\begin{equation*}
	\left.\begin{aligned}
		s_1 &= v_1 \cdot t_1 \\
		s_2 &= v_2 \cdot t_2
	\end{aligned}
	\right\}
	\quad t_{uk} \cdot \bar{v} = v_1 \cdot t_1 + v_2 \cdot t_2
\end{equation*}

% \end{alignat}

\bigskip

\centerline{	\color[HTML]{DD0000}{\textbf{Current document}}}

\bigskip

\centerline{ \color[HTML]{00BB00}{\textbf{Desired centered equations}}}

\end{document}

I am really stucked on this, as I can not find solution. I can not find similar example.

Darko

[Bartman]

I'd like to recommend using the second solution with the alignat environment:

Code: Select all

\documentclass{article}
\usepackage[most]{tcolorbox}% option most loads amsmath

\begin{document}
\begin{align*}
	\bar{v} & = \frac{s_{uk}}{t_{uk}}\\
	\left.\begin{aligned}
		s_{uk} &= s_1 + s_2 \\
		t_{uk} &= t_1 + t_2 
	\end{aligned}
	\right\}
	\quad\bar{v} & =  \frac{s_1 + s_2}{t_1+t_2}\\
	\left.\begin{aligned}
		s_1 &= v_1 \cdot t_1 \\
		s_2 &= v_2 \cdot t_2
	\end{aligned}
	\right\}
	\quad t_{uk} \cdot \bar{v} & = v_1 \cdot t_1 + v_2 \cdot t_2
\end{align*}

\begin{alignat*}{2}
	&& \quad\bar{v} & = \frac{s_{uk}}{t_{uk}}\\
	\left.\begin{aligned}
		s_{uk} &= s_1 + s_2 \\
		t_{uk} &= t_1 + t_2 
	\end{aligned}
	\right\}
	&& \quad\bar{v} & =  \frac{s_1 + s_2}{t_1+t_2}\\
	\left.\begin{aligned}
		s_1 &= v_1 \cdot t_1 \\
		s_2 &= v_2 \cdot t_2
	\end{aligned}
	\right\}
	&& \quad t_{uk} \cdot \bar{v} & = v_1 \cdot t_1 + v_2 \cdot t_2
\end{alignat*}
\end{document}

[Darkoni]

Bartman, I am amazed !!!

Will use the second solution

Many thanks !!!

bartman.png (53.74 KiB) Viewed 11512 times