1) Формула n-го члена геометрической прогрессии: aₙ = a₁ * g^(n-1), где a₁ - первый член прогрессии, g - знаменатель прогрессии.
2)a₁ = 7, g = 2a₂ = 7 2 = 14a₃ = 7 2^2 = 28a₄ = 7 * 2^3 = 56
a₁ = 8, g = 1/2a₂ = 8 1/2 = 4a₃ = 8 (1/2)^2 = 2a₄ = 8 * (1/2)^3 = 1
a₁ = 0.6, g = 1/3a₂ = 0.6 1/3 = 0.2a₃ = 0.6 (1/3)^2 = 0.0667a₄ = 0.6 * (1/3)^3 = 0.0222
a₁ = 12, g = 3a₂ = 12 3 = 36a₃ = 12 3^2 = 108a₄ = 12 * 3^3 = 324
1) Формула n-го члена геометрической прогрессии: aₙ = a₁ * g^(n-1), где a₁ - первый член прогрессии, g - знаменатель прогрессии.
2)
a₁ = 7, g = 2
a₂ = 7 2 = 14
a₃ = 7 2^2 = 28
a₄ = 7 * 2^3 = 56
a₁ = 8, g = 1/2
a₂ = 8 1/2 = 4
a₃ = 8 (1/2)^2 = 2
a₄ = 8 * (1/2)^3 = 1
a₁ = 0.6, g = 1/3
a₂ = 0.6 1/3 = 0.2
a₃ = 0.6 (1/3)^2 = 0.0667
a₄ = 0.6 * (1/3)^3 = 0.0222
a₁ = 12, g = 3
a₂ = 12 3 = 36
a₃ = 12 3^2 = 108
a₄ = 12 * 3^3 = 324