Math notation in LaTeX?

Question

How can I write e^(3j) in LaTeX?

I have tried many syntax, like $e^(3j)$ or $e^*{3j}$

Any help will be very well received.

What about $e^{3j}$ or $e^{(3j)}$ depending on what you want. — moewe, Aug 16, 2015 at 10:42
(at least) 3 people think this is well researched, it's also some how become a "hot question" - this is a prime example of what's wrong with the hot questions, people who know absolutely nothing come along and are like "Yeah, that's a good question" (3 upvotes is rather small, I've seen some 'if you knew what the [se site name] was about you wouldn't upvote this' hit as high as 65 upvotes) — Alec Teal, Aug 16, 2015 at 15:08
Possible duplicate of How do I produce exponents with variables? — Andrew Uzzell, Nov 9, 2016 at 19:13
I've closed the linked question as a duplicate of this one, since this one is much older. — Werner, Nov 9, 2016 at 20:07

Stefan Kottwitz · Accepted Answer · 2015-08-16 10:43:07Z

10

Group the exponent in curly braces, and use the ^ sign to make it a superscript. If you really need parentheses, add them inside the braces too.

\documentclass[border=10pt]{standalone}
\begin{document}
$e^{3j}$ or $e^{(3j)}$%a variable e
\quad
$\mathrm{e}^{3j}$% e as a constant
\end{document}

answered Aug 16, 2015 at 10:43

Stefan Kottwitz♦

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I feel one should use \exp and define it to one's likings, but that's debatable
– Bort
Aug 16, 2015 at 10:51
@Bort But there are times when one wants to write $\exp(blah)$ and times when one wants to write $\mathrm{e}^{blah}$. The former is well-suited to complicated expressions; the latter to simple ones.
– David Richerby
Aug 16, 2015 at 15:30

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