ЭШ
Эмма Шлотгауэр
GEOMETRIC SEQUENCE HEEEELP! GYES !!
a geometric sequence has 3trd term 75 and 4th 375 . Find the the common ration and the first term
a geometric sequence has 3trd term 75 and 4th 375 . Find the the common ration and the first term
a(3)=75;a(4)=375
q=a(4)/a(3)=375/75=5
a(3)=a(1)*q^(3-1)=a(1)*5^2=a(1)*25
a(1)=a(3)/25=75/25=3
Как-то так.
Удачи.