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by Han
Wed Sep 08, 2021 9:55 pm
Forum: Document Classes
Topic: Undefined control sequence
Replies: 1
Views: 24540

Undefined control sequence

hallo friends
I suddenly have a urgent problem on latex. I use texmaker and miktex. When I wrote \ my opinion is .... , there is a mistake said "Undefined control sequence. \my". And in pdf file, all the words "my" cannot be displayed. However, previously, the program worked well with all things ...