Ответ:
an = a1qn-¹ => gn-¹ = an/a1
q= 24/16 = 3/2
a6 = a1q⁵
a6 = 16 × (3/2)⁵= 121,5
Sn = anq - a1 / q-1 = 121,5 × 1,5 - 16 / 1,5 - 1 = 332,5
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Ответ:
an = a1qn-¹ => gn-¹ = an/a1
q= 24/16 = 3/2
a6 = a1q⁵
a6 = 16 × (3/2)⁵= 121,5
Sn = anq - a1 / q-1 = 121,5 × 1,5 - 16 / 1,5 - 1 = 332,5