:
 
() -> 8 -> .. 8

8

21.1



: 21.1. ) = 2 = ( + 2)2 + 1; ) = 2 = ( - )2 + 2; ) I/ = 2 I/ = ( + 5)2 - 4; ) = 2 = ( - 6)2 - 3.


21.1:
21.1 _ 3 ) __L_.- - ! *ij / 1 [ v> f Ѳ : . 11 .1 - L-: ! ~ ! - < J f- * 6* q L 1 ; > L J J ] ; t - . . - " A ; : e " ** | 1 / 5 ; 1 : ! ! ! .... 1 f ] 4 6 : 1 { U 1- N ; t't i._j X U. _L 1 fl-f 1 -+ 'Ȳ* " J ̳* .lu .- J------L \ - I ; /1 ; ; ft-...- .- .< L 5/ "f"* - - MM I ! J -- : : L. ... r \7 1 . 1 U! 1 L J 1 r j-- ^ ; j : ... < - 1 ? ! [ : ! ' -! .. ! - V? - = =

:

: 2.0/5 ( : 1)



:
19.51 19.52 19.53 19.54 19.55 19.56 19.57 19.58 20.1 20.2 20.3 20.4 20.5 20.6 20.7 20.8 20.9 20.10 20.11 20.12 20.13 20.14 20.15 20.16 20.17 20.18 20.19 20.20 20.21 20.22 20.23 20.24 20.25 20.26 20.27 20.28 20.29 20.30 20.31 20.32 20.33 20.34 20.35 20.36 20.37 20.38 20.39 20.40 20.41 20.42 21.121.2 21.3 21.4 21.5 21.6 21.7 21.8 21.9 21.10 21.11 21.12 21.13 21.14 21.15 21.16 21.17 21.18 21.19 21.20 21.21 21.22 21.23 21.24 21.25 21.26 21.27 21.28 21.29 22.1 22.2 22.3 22.4 22.5 22.6 22.7 22.8 22.9 22.10 22.11 22.12 22.13 22.14 22.15 22.16 22.17 22.18 22.19 22.20 22.21 22.22


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