I'm Phong, studying Cal III.
I get a question here. I want to ask a question about integral, but how to type a proper sign of the integral? Please help.
Welcome to the Math Help Forums (MHF). We are glad you joined us.
These forums are an excellent resource: lots of good information and many knowledgeable members here.
It is a great place for the sharing of ideas. I am sure you will learn a lot here.
On the forum home page, about half way down the page, is a section titled, "Math Help Resources".
Within this section is the sub-forum for LaTeX Help: LaTeX Help
Within this sub-forum are several threads on the topic of using LaTeX. I'd suggest you start by reading the stickied threads at the top of this section, they contain some tutorials that are very useful, including several examples that show you how to use LaTeX.
Hope you enjoy your stay here at MHF.
See you around the forums.