BAB 4

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#=
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+ 9*
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(rt1 [xta)
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b -l'#_a"- X -grt rq
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se[uogga _fx- J Xr-gxr t{
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4 J3-[a** -r,io
='+ *t *i^-'
= tro + Bx-t f :
, A=
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i . B= - t
t -_d,vl-<'-'
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ffi
= Ax-LntBx.-?g
tffi
Atg =o
-2A t19:= i- *
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= + 1'. [x-tl r. .t= tn tr-zlte
berrror.t i
b.
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