Arithmetic & Geometric Sequence Calculator
Find the n-th term and the sum of the first n terms of arithmetic and geometric sequences.
How to use the Arithmetic & Geometric Sequence Calculator
- Enter or select: First term aβ, Common difference d / ratio r, Number of terms n.
- The results (Arithmetic: aβ, Arithmetic: Sβ, Geometric: aβ, Geometric: Sβ, Geometric: Sβ) are calculated instantly as you type.
- Use βCopy linkβ to share the calculation with the same input values.
Formula
- aβ = aβ + (nβ1)d, Sβ = n/2Β·(2aβ + (nβ1)d)
- aβ = aβrβΏβ»ΒΉ, Sβ = aβ(1 β rβΏ)/(1 β r)