Предмет: Алгебра, автор: ArtaZXC

Докажите, что является нечетной функция у = f(x)

Приложения:

Ответы

Автор ответа: chekashov2000

Ответ:

Если f(-x)=-f(x), то функция нечетна; Значит, подставляем везде вместо х (-х) и упрощаем

Объяснение:

2)f(-x)=(-х)^5cos^2(-x)=-x в 4 и 6 аналогично

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: 1996October

1. Fill in the gaps with the correct variant:

1. There … a lot of students in this room yesterday
a) are
b) were
c) was
2. We ….3-4 lessons at the university every day.
a) has
b) had
c) have
3. It …sunny and warm tomorrow.
a) was
b) will be
c) is
4. My friends … at the university now.
a) are
b) were
c) will be
5. There are a lot new computers … this room /
a) at
b) on
c) in
6. They… an English article now.
a) are reading
b) will be reading
c) read
7. The workers … the new machinery when the head engineer came in.
a) were installing
b) was installing
c) installed
8. His brother…. the Technological University last year.
a) does enter
b) entered
c) did not enter
9. …. speaks English in your group well?
a) which
b) who
c) whose
10. My brother and his wife rent (сдают)…. old flat.
a) us
b) their
c) they
11. I and my friend are translating a new text now. … is very long.
a) this
b) that
c) it
12. The mathematics is … subject for me.
a) difficult
b) the most difficult
c) difficulter
13. Our group ….already …. to the university.
a) came
b) was coming
c) has come
14. By this time yesterday our chief … all the documents.
a) looked through
b) has looked through
c) had looked through
15. He went …..the room.
a) into
b) in
c) at
16. The new books … by the students in the library yesterday.
a) took
b) are taken
c) were taken
17. We … never … to England.
a) had been
b) have been
c) were
18. My dad …….the new car by the end of the month.
a) will buy
b) will have bought
c) buy
19. The new programs …..just ….by our engineers.
a) have downloaded
b) have been downloaded
c) download
20. This building is… than that one.
a) old
b) the oldest
c) older

2. Fill in the gaps with the correct variant:

1. I don’t have neighbours behind the walls because I live in a … house.
a. terraced
b. detached
c. semi-detached
2. Students studying for a Master’s degree are called … .
a. post-graduates
b. undergraduates
c. graduates
3. Teachers guiding students in British Universities are … .
a. supervisors
b. advisors
c. tutors
4. I’m studying part-time and I’m an/a … student.
a. full-time
b. external
c. internal
5. One has to study 3 years to … a Ph.D. degree.
a. award
b. achieve
c. receive
6. Right now I’m… a course in Applied Mathematics.
a. taking
b. getting
c. visiting
7. Human-factors engineering deals with….
a. efficiency
b. safety
c. quantity of workers
8. “to bring about” means …
a. to receive
b. to introduce
c. to carry
9. It’s a … building with tiled roof.
a. two-stairs
b. two-storied
c. two-floor
10. Electronic con¬trols enable AC motors … at variable speeds
a. to run
b. to go
c. to move

1 год назад

Предмет: Русский язык, автор: tanyuschkaan

Какое склонение у слова красивой цепочкой

1 год назад

Предмет: Другие предметы, автор: Умник124

Есть ли в Чебоксарах мемориальная доска в память о композиторе А.Г. Орлов-Шузьм

1 год назад

Предмет: Математика, автор: Алёнка07092005

найдите пожалуйста ширину под символом с.

8 лет назад

Предмет: Математика, автор: 1989297

Грузоподъёмность первых вертолётов 500 кг, а современных вертолётов 40 000 кг. Во сколько раз грузоподъёмность современных вертолётов превышает грузоподъёмность первых самолётов ? На сколько килограмм?

8 лет назад