Предмет: Алгебра, автор: nurxannovruzov

y = 2/корень X

Срочно

Ответы

Автор ответа: hlopushinairina
1
y=2/√x;x≠0;⇒√x=2/y;⇒x=4/y²=(2/y)²;
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Упр. 246. Раскройте скобки, употребляя глаголы в требующемся времени. 
1. What you (to do) here? — I (to prepare) for my report. — How long you (to prepare) for it? — Oh, I (to work) since morning. 2. He (to teach) at school for five years when the war (to break) out. 3. She (to study) English since last year. 4. What you (to read)? — I (to read) a magazine. — How long you (to read) it? — I (to read) it for half an hour. 5. She (to live) in Moscow for ten years when her sister (to come) to live with her. 6. Our teacher (to come). Now he (to speak) with our monitor. 7. They (to speak) when I (to look) at them. 8. I (to walk) about an hour when I (to see) a little house not far from the river. 9. When he (to read) thenewspaper, he (to give) it to his brother. 10. Ho (to leave) for Rostov in 1990 and since then he (to live) there. 11. At this time tomorrow we (to discuss) your report. 12. Now she (to read) the book which I (to give) her yesterday. 13. You ever (to be) to London? — Yes, I (to be) there last summer. 14. What your friend (to do) now? — She (to have) dinner. She usually (to have) dinner at this time. 15. I (to buy) a new dress. I (to show) it to you tomorrow when you (to come) to my place. 16. So you begin working tomorrow! And who (to take) care of your children when you (to go) to work? 17. Hello, Peter! Where you (to go)? — I (to go) to the library.