Предмет: Алгебра, автор: bi2

найти экстремумы функций [tex]y=2x^3+6x^2-18x+120

Ответы

Автор ответа: suechtig
0

берем производную.

в итоге х^2+2x-3=0

корни по т. Виетта

х=1

х=-3

если надо "у" то подставте в изначальную фун-ю  "х "   )))

успехов вам

Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Английский язык, автор: mz4075694
GRADE 8
Tasks for the Summative Assessment for the term 1

I. Reading.
Read and mark sentences TRUE or FALSE .
Topic "Internet"
We can’t imagine our lives without the internet, computers and other gadgets, which unite all the users of World Wide Web. The internet is a very important source of information for people. Nowadays, you can find there any necessary information not only for education, or work but also for entertainment. Nowadays people communicate with each other, using the internet, social networks are very popular and people can’t imagine their lives without online communication.
But we must say, that using the internet has both advantages and disadvantages. The internet influences us very much, especially young people. There exist dozens of diseases that are the result of playing computer games, and spending too much time in networks. We do sport and walk less and less and spend time, sitting at a computer. Also, using a computer, there exist a possibility to become a victim of online fraudsters, which can try to steal your money.
Internet became so popular nowadays because people can use it not only at home, in the personal computer, but also they can go online, using their mobile web. So we can get any information we want, no matter, whether we are at home or not. And in addition, the price of such mobile web is not so expensive.

Task 1 Answer the questions
1.why is the Internet important for people?
2.What do people do with the Internet nowadays?
3.What can you say about advantage/disadvantage of Internet?
4.Where can we use the Internet?
5. Is the price of mobile Web cheap?

Task2 Tick the correct item.
1)Greg enjoys … in the rain.
□ walk □ walking □ to walk

2)I’d like … Molly an e-mail now.
□ send □sending □ to send

3)What does Steve want ...?
□ do □ doing □ to do

4)The cold coach watched his team … football.
□ play □ playing □ to play

5)I prefer … detective stories.
□ read □ reading □ to read

Task 3 Complete the sentences with personal pronouns
1)I don’t agree with people… say that all modern music is rub­bish.
2)That’s the music … I like best of all.
3)The shop … I bought this CD is next to the post office.
4)The man … party I went to is a composer.
5)I’ve broken the vase … you presented me.
6 лет назад
Предмет: Химия, автор: pusharapetushara
Определите строку, в которой схема распределения электронов соответствует атому неона:

A) Cl+5, 1s22s22p63s2 B)Na+,1s22s22p63s1 C) Na+1, 1s22s22p6 D) ) F0, 1s22s22p5 Cl+5, 1s22s22p63s2.

​
6 лет назад
Предмет: Математика, автор: Аноним
Математик, дифференцирование сложных функций


Хотя бы 4 задания
6 лет назад
Предмет: География, автор: lollol0000

В бассеёне какого океана наодится Балтийское море , какие реки в падают в Балтийское море, Средняя и Максимальная Глубина Балтийского моря , Замерзаемость Балтийского моря , Характер берегов (равнинный, горный )?, основные течения Балтийского моря , хозяйственное значение морей (полезные ископаемые , транспартные пути , порты и промысловые животные ) ВСЁ СВЯЗАННО С БАЛТИЙСКИМ МОРЕМ!
9 лет назад
Предмет: Математика, автор: Roxy2909
Запиши первые два числа последовательности __ , ___ ,6, 2, 8, 1
9 лет назад