.


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. = f(u) u = u(x), - , = f(u) u = u(x)




 

= f(u) u = u(x), - , = f(u) u = u(x) , . u . , . , , = f(u) u = u(v), v=v(x), , f(u), u(v) v(x) - .

 

 

1. 8.

2. , 9. ,

3. 10.

4. 11.

5.

6. 12.

7. 13.

 

. :

1. = 4 23 + 3 + 1

. , : (4 23 + 3 + 1)' = = .

2.

. , = .

3.

. ,

4.

. : = f(u), u = u(x), u = 2 + 2..

 

 

. , , , .

. , > -5:

(1)

. , 2 . :

(2)

(1) = 0,

> -5, . (2), .

 

 

 

= f(x) :

, .

:

.

:

,

.

, = =

- .

: = =

 

.

f(x). : . n ( n- ) (n 1), . , : .

. n = cos x.

. , :

= cos x = os(x+0 )

x = cos(x+1 )

x = cos(x+2 )

x = cos(x+3 )

.

cos(x+n ), n=

 

 

 

 

,

.

: .

 

.

. :

, .

 

 

, . .

. , , , , . , , : = .

, . , n > 2, , , = .

, . 0, .

.

1.

2. =

3.

4.

5.

 

, .

6. , ,

.

, .

 





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: 2016-11-12; !; : 395 |


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