. : - (); . 52.
, . VD. : u(t) ? = 0 u(t). :
u(t) =u(t)+u(t) (33)
( 53). , ?1 u1, u1. , ?2 u2 ( u1, . . ). u2. , u1 u2 , .
, . , . 54. , . () ( 55).
. u(t) () R1 R2 1 2. u(t) . u(t) ?(t) . : u1=u+ 0,5u; u2=u0,5u ( 56). , u . u1 u2. u1 > u2. u1(t) = Um1;u2(t) = Um2 .
, : u(t) =u1(t)u2(t) = (Um1Um2) 57. ?(t) = 90 ?(t) = 180 , . . Um1 = Um2 u1(t) = u2(t). ,
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, . VD. : u(t) ? = 0 u(t). : , . , . 54. , .
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