How can I write this math equation in latex?

Question

Here is what I want to write in latex:

Could you please show what your code looks like? – Someone Apr 15 '20 at 14:01 — Someone, Apr 15 '20 at 14:01

score 2 · Answer 1 · answered Apr 15 '20 at 14:02

2

Welcome! Here's how to write your equation. I added another solution using the command \bm from the bm package, which allows to write bold italic math.

\documentclass{article}
\usepackage{amsmath}
\usepackage{bm}
\begin{document}
\begin{tabular}{ll}
    With \verb|\mathbf|:    & \( \mathcal{D} = \{ (\mathbf{x}_i, y_i) \}_{i=1}^N \) \\
    With \verb|\bm|:        & \( \mathcal{D} = \{ (\bm{x}_i, y_i) \}_{i=1}^N \) 
\end{tabular}
\end{document}

answered Apr 15 '20 at 14:02

Vincent

20,157

\verb|...| won't work sometimes... – Someone Apr 15 '20 at 14:08
@Someone Can you precise what you mean? When wouldn't it work? – Vincent Apr 15 '20 at 14:15
Thanks, can I write this only using $$ or is that impossible? – JohnDemo Apr 15 '20 at 14:37
Defining an env – Someone Apr 15 '20 at 14:38
1

@JohnDem Yes, it has to be written in math mode, so between $...$ or $...$ for inline math, or between \[...\] for display math. $$...$$ also works, but you should avoid using that. – Vincent Apr 15 '20 at 14:41
@someone - The \verb isn't really part of the answer; just a cute comment. – John Kormylo Apr 16 '20 at 00:36

How can I write this math equation in latex?

1 Answers1