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,

, '

. '

,

. ?

,

A , .

C

1.

'

. 1. '

1 2 ,

.

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2.

' .

= 1 2 + 1 2

E (1).

, ,

. ,

, . , .

#1

#2, #1.

.

.

. D (1)

= =

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, . F

'

= /

= 0, =

W = 0 B

EF . B > 0, = /

. ,

= + / . F

, < 0.F , 0

30 0.1 . = 2000H

R = 20000 , = 2000 0.3 +20000 0.03 MI10. E

.

F, = . F

E ,

,

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. ,

30 300

. < 0 , A

= + < 0

.

, . ,

: F

. B

?

3.

?

F ,

; ..

. F

, 1 2

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. : )

; ) .

,

.

), '

.

:

, ,

,

' . A

, .

,

. A ,

' .

4. C,

= .F , = > 0, .

A

' .

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,

. B

.

'

.

, .

; ..

' , ,

.

. F,

B B

, , ,

. A

, ' B

.

.

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. D

,

" . C

' .

= 0,

.

, , ,

.

. D

.

10 100

10 100

.

. ,

. '

,

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.

'

, " "

' . ' ,

= 1 2 .

F , =

1

= 1 2

4 1 2 1 .

4 = 10,

,

= 2/10 1 .

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= 1 , '

= 1 , 200 =614 . 1 30

, 20

. F 10 ,

200 . = 200 =

50

. F 100

,

50 =

= (0.11 )(100 )(454 )

= 50 4994 0

0.11 . F ,

1 100

C .

'

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3.0C.

EE

. , '

.

,

.

. F , ,

. ,

.

,

, .

. F E

E 2000% .

5 .

. A ,

, . C,

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.

. , ,

.

. A,

EE 20

1 .

.

" "

,

,

.

F . ,

.

,

,

,

. E

. 5

60

.

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D :

..

D .

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