I'm not familiar with an app called ai or ai课代表 specifically、Could you please provide more context or information about what you're looking for?

However, I can suggest a few possibilities:

1、AIpowered learning platforms: There are many AIpowered learning platforms that offer courses and educational resources、Some popular ones include Coursera, Udemy, and edX、You can search for these platforms and see if they have an app or a website that you can access.
2、AIassisted study tools: There are also AIassisted study tools that can help with tasks such as homework, studying, and organization、Some examples include AIpowered notetaking apps like Evernote or OneNote, or AIdriven study planners like Forest or StayFocused.

If you could provide more context or clarify what you mean by ai课代表, I'd be happy to try and help you further!