http://lamed.livejournal.com/ ([identity profile] lamed.livejournal.com) wrote in [personal profile] shvarz 2009-09-26 10:01 pm (UTC)

Конические сечения - очень наглядно и полезно для понимания квадратичных функций.

Post a comment in response:

This account has disabled anonymous posting.
If you don't have an account you can create one now.
HTML doesn't work in the subject.
More info about formatting