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# Latex question

1. ### ehrenfest

[SOLVED] latex question

How do you get a cube, fourth, fifth root in latex? I mean how do you get a little 3 to appear in the upper left next to the square root sign?

2. ### robphy

4,355
$$\sqrt[3]{x}$$

3. ### ehrenfest

BTW, what is the best online reference for latex?

4. ### robphy

4,355
I don't know of the "best"... it really depends on what you are looking for.

This looks pretty good:
http://www.tug.org.in/tutorials.html