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:




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11-20. .

. ) .

 
 


11. )

12. )

13. )

14. )

15. )

16. ) )

17. )

18. )

19. )

20. )

):

 

1. , .

2. , .


3. , .

 

 

4. .

5. .

):

1. , , , :

,

2. , .

3. , .

4. , .

 

):

t =, dt =, dx=.

, . . .


21-25 :

21. x+ y'=0

22. 4 x3- y'=0

23. (x+1)ydx=dy

24. 2xdx=3y2dy

25. y'=x2y-x2

26-30

26. x2dy=y2dx, y=0,25 x=0,1

27. , y=5 =4

28. y'=32, y=5 =1

29.

, =2+ y'-2=1

30

, =2 =1

 

  1. .
  2. , .
  3. , .

31-40. .

b . . , : , - , - .

 

31-40

 

  = 5, b = 4. = 4, b = 6. = 3, b = 5   = 6, b = 2 = 4, b = 7 = 7, b = 5   = 5, b = 6 = 2, b = 7 = 6, b =4   = 8, b =7
     
                     

() m n: () = .

10. . , ( + ) = () + ().

, ( + ) = () + () ().

 

20. . ,

() = () ().

 

30. Ā

(Ā) = 1 ().

Ā , ( )[, ]

41-50.

xi -1    
pi p 1-2p p

 

Y DY Y=2X+3.



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