ребята помогите с алгеброй
Напишите формулу общего члена геометрической прогрессии 1)а₁ = 7; а₂ = 8;
2)а₁=3 а₃=1\3 3)а₄=а₆=-1 4)а₁=cosα a₂=ctgα 5) a₁=sinφ а₂-=1\2 sinφ 6)а₁=tgφ a₂=1
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