. XI, Nöqtələrin yerinə müvafiq sözönləri qoyun və cümlələri Azərbay-
can dilinə tərcümə edin.
1. Please take your pen
the table and put it ... your bag, Jane,
Now please take it ... your bag and put the book... the table. 2.Please
go
your table and take your book your bag. 3. Please look
the
blackboard. Please go the blackboard. 4. Take the cup Jane
please and put it ... the table. 5. Please take that long pencil ... .
your brief-case, Nick and put it ... the table. 6. The black pen is ... the
table ... the brown pen is ... my bag. 7. The red pencil is that book
too. 8. Please, take these books the table. 9. Please go the
blackboard. 10. Please close your book and put it ... your briefcase. .
11. It's ... your brief-case now. 12. Please go the door and close it.
13. Please put a spoon
your cup, Ben. 14. Please
go
the
room. 15. Please take a pen ... the table and put it ... your bag, Jane.
16. Now please take it ... . your bag and put it ... your book.
с этим заданием!
ртпооаоаьмо вгаьвоьаьсsinx + cos x + sin2x = 1
sin x + cos x + 2sinx cosx -1=0
sin x + cos x +2sinx cosx -(sin²x+cos²x)=0
(sin x + cos x) + 2sinx cos x - (sin²x+cos²x+2sinx cosx -2sinx cos x)=0
(sin x+ cos x)+2sinx cosx - (sin x + cos x)² +2sinx cosx=0
(sin x + cos x)² + (sinx + cosx)+4sinxcosx=0
Пусть sin x + cos x = t причем (-√2 ≤ t ≤ √2), тогда возведем оба части до квадрата, имеем
(sin x + cos x)² = t²
1+2sinx cosx = t²
2sinxcosx = t²-1
Заменяем
t²+t+2*(t²-1)=0
t²+t+2t²-2=0
3t²+t-2=0
D=1+24 = 25
t1=(-1+5)/6=2/3
t2=(-1-5)/6 = -1
Возвращаем к замене
\begin{gathered}\sin x+\cos =-1\\ \sqrt{2} \sin(x+ \frac{\pi}{4} )=-1 \\ \sin(x+ \frac{\pi}{4} )=- \frac{1}{ \sqrt{2} } \\ x+ \frac{\pi}{4}=(-1)^{n+1} \frac{\pi}{4}+ \pi n,n \in Z\\ x=(-1)^{n+1} \frac{\pi}{4}- \frac{\pi}{4}+ \pi n,n \in Z\end{gathered}
sinx+cos=−1
2
sin(x+
4
π
)=−1
sin(x+
4
π
)=−
2
1
x+
4
π
=(−1)
n+1
4
π
+πn,n∈Z
x=(−1)
n+1
4
π
−
4
π
+πn,n∈Z
\begin{gathered}\sin x+\cos x= \frac{2}{3} \\ \sqrt{2} \sin(x+ \frac{\pi}{4})= \frac{2}{3} \\ \sin (x+ \frac{\pi}{4})= \frac{ \sqrt{2} }{3} \\ x=(-1)^n\arcsin( \frac{ \sqrt{2} }{3} )- \frac{\pi}{4}+ \pi n,n \in Z\end{gathered}
sinx+cosx=
3
2
2
sin(x+
4
π
)=
3
2
sin(x+
4
π
)=
3
2
x=(−1)
n
arcsin(
3
2
)−
4
π
+πn,n∈Z
Объяснение:
1
1 We haven't been reading books for a year.
2You haven't been runing very much lately.
3Jane hasn't been teaching English all year.
4Mark hasn't been doing exercise regularly
5Martin hasn't been eating regularly
2
1Every Monday Sally drives her kids to football practice.
2work/study
3starts
4don't swim/is
5agree
6talks
3
1 is Andrea swiming in the lake
2 is Martin washing his T-shirt?
3 are the guys carring the buckets?
4 is Peter holding the string of the kite?
4
1 is barking
2 are washing
3 are learning
5
1 don't play
6
1Where Joe does live? 2 Why don't they visit us? 3 When do we board the plane?
не знаю насколько правильно