xdy-ydx/x^2+y^2=0
Ответ: arctg y/x=C

Запитання до твору Сім'я Дикої Качки ( 12 запитань ) СРОЧНО

Падежи слов сказку,деда,бабу,курочку,мышка,хвостиком,яичко

9.3аполните пропуски местоимениями some, any, no, every или производными от них. 1. You must ask somebody to help you with this work. 2. If I have some free time, I shall go...tonight. 3. Have you heard anything about our plan? 4. Did anybody see this film yesterday? 5. Did you say something? — No, I said nothing. 6. Don't tell her anything about me. 7. ... is waiting for you, Mother. 8. Don't worry, everything is all right. 9. Is anybody absent today? 10. I can see...there, it is so far. 11. Could you tell me anything interesting? 12. It is an old joke. Everybody knows it.

10. Раскройте скобки, поставьте глагол в нужное время. 1. They (to send) us several telegrams already. 2. How many languages you (to speak). 3. We (to be) in the theatre yesterday and (to come) back home by 10 o'clock. 4. Last year Professor Jones (to teach) us English. 5. Nick (to have) lunch in the cafeteria now. 6. My friend (to pass) English exam soon. 7. I (to forget) to bring my notebook to class yesterday.