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first of all i'm new in latex
I wanted to ask if there is a way where i can enlose a text like a code like here in stack overflow thank you very much.
Ive searched here but i dont really know what to seek or how to ask something like this.
I don't know what do you mean by code like text. But you can use \verbatim to display some code like the following if this is what you wanted:
\begin{verbatim}
for i in range(1, 20):
print i
else:
print "the loop is done"
\end{verbatim}
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How can I write this function (image) in Latex?
This should lay a sufficient foundation:
\documentclass{article}
\setlength{\parindent}{0pt}% Just for this example
\begin{document}
$f \colon \{0,1\}^N \rightarrow \{0,1\}^M$
$f \colon \{0,1\}^N \mapsto \{0,1\}^M$
\end{document}
You can change the spacing around : (or \colon) as needed, perhaps using f~\colon~.
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I am inserting some keyword like Don't , has'nt in Sqlite which is not inserted.any one have idea about it.
Use ' as escape character and insert it like this:
dont''t
Documentation:
A single quote within the string can be encoded by putting two single quotes in a row - as in Pascal
In case you are using an API to connect with Sqlite, instead of manipulating the original string a better approach would be to use sqlite3_bind_text() function to bind a value to a ? placeholder in the SQL. Thanks to #Rob for pointing this out.
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Given I have:
int1, int2, int3 = 1, nil, 3
how would I subtract these ints from another variable, only if they weren't nil? I can write something sloppy, but I want a single line process if possible.
another_variable - [int1, int2, int3].compact.sum
othervariable - int1.to_i # will turn nil into 0
You can write something like
ans = int1 && (int2-int1)
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I'm writing my internship report in latex but I have some problem with this
formula 7 in this image below:
Can someone please give me the latex code for this formula?
\[
\frac{%
e^{v_m-1}
}{%
\frac{w_0 e^{w_o - n v_m} - n v_m}{w_o - n v_m} e^{v_m}
- \frac{w_0 e^{w_o + n v_m} + n v_m}{w_o + n v_m}
}
\]
The only interesting here is that if you want to make it look like it does in your paper, you'll have to change the math font. E.g. \usepackage{mathptmx}. And, possibly, add extra space where you want it.
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I include a figure like this
\begin{figure*}
\begin{center}
\includegraphics[width=6.7in]{pic/recall_details.png}
\caption{ Recalls of test query MB002-MB049}
\label{ recall_details}
\end{center}
\end{figure*}
And then I refer it using \ref{recall_details}. Instead of getting numbers like 1, 2, I get ??. Literally I mean ??. What is wrong with my codes? How to make the references show correctly?
You should "compile" your latex code twice to get numbers instead of question marks
The issue is that you're referencing \ref{recalls_details}, but you've defined \label{ recalls_details}. That extra space before recalls_details is what gets you ?? instead of the figure number. You should either change the \ref to \ref{ recalls_details} or the \label to \label{recalls_details}.
On another note, I suggest you add a modifier at the start of the label, such as fig: in this case: \label{fig:recalls_details}. This is useful when you have different types of labels (e.g. to sections, sec:, and to equations, eqn:).
The bottom line is to always use the exact string you give within the \label{} in the relevant \ref{}.