1) Agar (bn) geometrik progressiyada b6=0,243 va q=0,3 bo’lsa, geometrik progressiyaning birinchi hadini toping.
2) Agar cheksiz kamayuvchi geometrik progressiya yig’indisi 18, birinchi hadi 15 bo’lsa, uchinchi hadini
toping.
3) Agar cheksiz kamayuvchi geometrik progressiyada b2=0,3 va b3=-0,2 bo’lsa, progressiya yig’indisini toping.
Ko’chirib olish: 9-sinf, Algebra. Geometrik prograssiya mavzusida nazorat ishi.