oblicz pierwszy wyraz i iloraz ciagu geometrycznego (an) wiedzac ze a2=6/7
(szesc siodmych) oraz a3=9/7
odp w zal
a2 =6/7
a3 =9/7
a1 =?
q = a3/a2 =9/7: 6/7 =9/7 x 7/6
q =3/2
a1 =a2:q
a1 =6/7 :3/2 =6/7 x 2/3
a1 = 4/7
=========
q = a3/a2 =9/7: 6/7 =9/7* 7/6= 9/6= 3/2
a1 =a2:q=6/7 :3/2 =6/7* 2/3= 12/21= 4/7
odp:a1=4/7 q=3/2
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odp w zal
a2 =6/7
a3 =9/7
a1 =?
q = a3/a2 =9/7: 6/7 =9/7 x 7/6
q =3/2
a1 =a2:q
a1 =6/7 :3/2 =6/7 x 2/3
a1 = 4/7
=========
a2 =6/7
a3 =9/7
q = a3/a2 =9/7: 6/7 =9/7* 7/6= 9/6= 3/2
a1 =a2:q=6/7 :3/2 =6/7* 2/3= 12/21= 4/7
odp:a1=4/7 q=3/2