Analytic geometry. Where to read about curves of the 2nd order?

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MuffinLover32021-10-22 17:21:12

Mathematics

MuffinLover3, 2021-10-22 17:21:12

Please tell me something about ellipses. We pass the optical property of the ellipse ... We just can’t understand the proof

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hint000, 2021-10-22
@hint000

We pass the optical property of the ellipse

You can read it here:
https://www.google.com/search?q=optical+properties...
the very first link:
https://dev.mccme.ru/~merzon/mirror/mp-optical/