y = cos²x + sin2x найти y’ - №6815037

y = cos²x + sin2x найти y’
- Предмет:
  Математика
- Автор:
  ming
- 6 лет назад

Ответы 1

y`=2cosx(-sinx)+2cos2x=-sin2x+2cos2x
- Автор:
  brenton
- 6 лет назад
- 0
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Кому не сложно, помогите выбрать правильный вариант.

1. l ___ in London.
a) are
b) was
c) can
d) where
e) do

2.What time ____ the lesson start?
a) doing
b) are
c) does
d) is

3. Mount Everest is ____ than Mont Blanc.
a) highest
b) the highest
c) the higher
d) more high
e) higher

4. I think you have made ___ night choice
a) the
b) many
c) a
d) some
e) this

5. Can you ___ how to get to the airport please?
a) explain
b) speak
c) tell
d) say

6. I can't see him anywhere. Where ____ ?
a) was he
b) is
c) did he goa
d) he goes
c) he went

7. While I _____ my homework I heard a strange noise
a) am making
b) did
c) was making
d) made
e) was doing

8. On Monday I _____ a letter from Wolfgang
a) have received
b)get
c) received
d) was written
e) have got

9. What ____ ? Playing computer games, reading. That sort of thing.
a) does he like doing
b) he likes to do
c) he likes
d) is he like
e) would he like

10. English ______ in Canada, Austraha and New Zealand as well as America and Britain
a) is spoken
b) is speaking
c) speaking
d) was spoken
e) speaks

11. This weekend I ______ a wedding
a) am going to
b) going to
c) will go to
d)go
e) will go

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a) will make
b) are going
c) axe having
d) are making
e) will go

13. I'm tired. I just want ____ bed
a) go to the
b) to go to the
c) go to
d) going to
e) to go to

14. Michael _____ shopping.
a) loves going
b) enjoys going for
c) likes going to
d) wants to
e) like to go

15. Look. I'd give you her phone number if I ____ it.
a) have had
b) had
c) am having
d) have
e) was having When she

16. When she got to hospital they found the she ______ her leg.
a) broke
b) was broke
c) had been broken
d) had broken
e) has broken

17. You come from France. _______
a) weren't you
b) don’t you
c) haven't you
d) aren't you
e) didn't you

18. I'd like to know where _____
a) is die school
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