# Math notation in LaTeX?

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. 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) Aug 16, 2015 at 15:08
• Possible duplicate of How do I produce exponents with variables? 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

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
$\mathrm{e}^{3j}$% e as a constant

• I feel one should use \exp and define it to one's likings, but that's debatable
• @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. Aug 16, 2015 at 15:30