(1780 1784)
, .
+ 22 4 D(4) = - 74 .
4 + 22 D(4) = + 74 .
, , , .
.. (1840)
.
, , QV = DU , , Qp = D.
.
1.
( ) .
+ bB cC + dD
D- = [D() + dD(D)] - [D() + bD()]
I :
65 + 7,5(2 +3,76 N2) = 72 + 32 + 7,5×3,76 N2
D0- = 7D (2) + 3D (2) - D (65 ).
, 0.
2.
( ) .
+ bB cC + dD
D- = [D() + bD()] - [D() + dD(D)]
II :
65 + 7,5(2 +3,76 N2) = 72 + 32 + 7,5×3,76 N2
D- = D (65).
. 123- , , ( 2. .4). , - () (.29).
, () 0. , , .
( ) .
D - = D0 +
(, ) , , , .
( , , .)