等比数列计算器
求等比数列的项
公式
aₙ = a₁·r^(n-1) | Sₙ = a₁(1-r^n)/(1-r)
Each term multiplied by constant ratio r.
示例
a₁=2, r=3, n=8
a₈ = 4374, Sum = 6560.
常见问题
关于 等比数列计算器
Find any term and sum of a geometric sequence.
求等比数列的项
Each term multiplied by constant ratio r.
a₈ = 4374, Sum = 6560.
Find any term and sum of a geometric sequence.