Undefined control sequence. ——删除文件夹里除了.tex文件外的其他文件，重新运行。
Here “Undefined control sequence” means an unrecognised command, and below that message, “l.1” means the error was encountered on line 1. An input line at the bottom of the window has appeared with a cursor. LaTeX is in interactive mode and is awaiting a response. There are several ...
1 I have installed TexWorks via Ubuntu Software launcer. When I make a mistake in an equation I get an error but when corrected and run again I get the error ! Undefined control sequence. l.36 \newla that seems to be totally unrelated related to the original code and I when I sear...
I do have XeTeX and when I try to use XeTeX, it gives me the error of Undefined control sequence. Since I am new to Linux and googling increases my confusion, I decided to use TeXWorks which is an IDE I hope will have all the dependencies to compile the .tex ...