4( )20,250,25V -=SMNC 483 4 8B A X A X( ) ( )V V V - -= + =.S BCNM...

3. 4

( )

²

0,25

V -

=

SMNC

48

3 4 8

b a x a x

( ) ( )

V V V - -

= + =

.

S BCNM

SMBC

SMNC

48

m + )

b x a x

3 12

( )