[Tex/LaTex] Write more beautiful math equations, like a professional book

equationsformattingmath-mode

I want to write math equations more "beautiful". My equations are shown as follows:

equation

The vector looks ugly and disproportionate. And I like that they look it this way:

equation

The vector looks good, in place and the letters clear and well defined.

Best Answer

A first note: The equations shown below represent an identical copy of the second expression shown by the OP. Since they are not correct, according to the accepted vector notation, I apologize in advance.

From the first equation it can be easily recognized that the \usepackage{palatino} and \usepackage{mathpazo}has been used, because of the typical italic setting, so with a basic MWE the bold faced variant could be defined as you like:

\documentclass{article}
%
\usepackage{amsmath}
\usepackage{palatino}
\usepackage{mathpazo}
%
\begin{document}
\[
\mathrm{d}\mathbf{r}=%
\mathrm{d}x\hat{\mathbf{i}}+%
\mathrm{d}y\hat{\mathbf{j}}+%
\mathrm{d}z\hat{\mathbf{k}}
\]
\end{document}

Here is the (I hope it's beautiful enough) example output:

enter image description here


EDIT:

This workaround has been done by substituting mathpazo with newtxmath:

\documentclass{article}
%
\usepackage{amsmath}
\usepackage{palatino}
\usepackage{newtxmath}
%
\begin{document}
\[
\mathrm{d}\mathbf{r}=%
\mathrm{d}x\hat{\mathbf{i}}+%
\mathrm{d}y\hat{\mathbf{j}}+%
\mathrm{d}z\hat{\mathbf{k}}
\]
\end{document}

enter image description here

As you can see the plus and equal sign are smaller by default. To change directly these operators inside the old font would require some kind of sorcery that at the end won't match a default setting.

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