найдите производные у=-х^2-1 - №23417314

найдите производные у=-х^2-1
- Предмет:
  Математика
- Автор:
  konahi79
- 6 лет назад

Ответы 1

y ' = ( - x^2 - 1) ' = - (x^2)' - (1)' = - 2x - 0 = - 2x
- Автор:
  beauecqg
- 6 лет назад
- 0
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Captain Cowgill had always wanted to arrange a hot-air balloon expedition. One day, he placed an announcement in all the morning papers. He wrote that he needed three people who wanted to take a risky adventure. Ten people came to his office and Captain Cowgill selected three of them: two men and a young lady.

The first volunteer was Mr. Crutter, a well-dressed man of about sixty. He looked depressed and unhappy. The second one was a doctor, Dr. Hagan, a sad thin gentleman. The third adventurer, Miss Dermott, looked slim and miserable. They were ready to fly in the balloon in spite of the risks. Though Captain Cowgill hoped for success, there was a great chance that the participants wouldn’t come back.

The next day, the balloon was ready for the journey. They had some food and the gas equipment. It was supposed that the travellers would fly during the day and then land for the night. Right before take-off, a young man ran up to Captain Cowgill and begged to let him join the expedition. Captain Cowgill listened to his arguments and let the young man, Mr. Winden, fly too.

With the last farewell to Captain Cowgill, the balloon went sailing towards the clouds. At first the travellers said nothing. An hour later they found the journey exciting. Two hours later they revealed their reasons for coming on the dangerous flight.

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In the evening, the travellers decided to take a rest. They landed in a deserted place and tied the balloon to a tree. After supper they continue talking about their unhappy fates. Suddenly, Mr. Crutter offered to share his money with his new friends. Dr. Hagan smiled and looked at Miss Dermott. “I think I can cure you, Miss Dermott,” he said. “I have already had patients with the same diagnosis.” Miss Dermott smiled. But it wasn’t the last surprise. Mr. Winden proposed to Miss Dermott saying that he had fallen in love at first sight. She shyly promised to think it over.

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The group decided to walk to the nearest railway station. Mr. Crutter bought tickets for his new friends and they sent Captain Cowgill a telegram. It said that the balloon had flown away accidentally, their expedition had failed and they would arrive in town the next day.

1.Captain Cowgill tried to find the participants for his project using an advert.
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