2 ר

2.1

 

l. , (1).

l. = l. a t .. / a t . , (1)

l -

, (l =3);

at.. -

,;

at..-

, /.

at, / (2).

 

at. = a t=+20 [1 + aa (t. 20 )] , (2)

 

a t= +20 - t=20

, /.

a t= +20 = 10.36 /;

aa -

, 1/.

 

 

 

:

atmax = +19 =10,36[1+1,96 10-3(19 -20 )] =10,34 ;

at.= +8 =10,36[1+1,96 10-3(8 -20 )] =10,12 ;

 

at.=+8,5=10,36[1+1,96 10-3(8,5 -20 )]=10,13 ;

 

L. = 3 = 2,99 .

 

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