fh= 50 fh =50*1.41421=70.7
25. . : . .
. . . . 10, 20, 40 . 40 (.42). 1-4. 40 1, 2, 3, 4. 1 4 1-1 4-4, 1 4. 1-4 , 1:2000 (<5 100 ), 1, 4 , , - 2 3. -"", .
, . i = - bi, - = + b;
bi - . - (.42) , , . (), 4683 4783 3 . 0.01 . - . 513 512 3 1. 1 512 1 , .
26. H ...
H =