Odpowiedzi

2009-11-23T21:42:13+01:00
A3=8 a3=a1*r^2
a7= 1/2 a3=a1*r^6

8=a1*r^2 z tego wynika 8/ r^2 = a1
1/2 = a1*r^6

1/2 = ( 8/ r^2 )* r^6
1/2 = 8 r^4 / 8
1/16 = r^4
r=1/2

a1= 8/ (1/4)
a1= 32


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