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what is the formula for geometric progression. The recursive formula for a geometric sequence with common ratio r r and first term a1 a 1 is an ran1n 2 a n r a n 1 n 2 How To. Formula for geometric progression.
Ar 2 10 x 3 2 10 x 9 90. Note that after the first term the next term is obtained by multiplying the preceding element by 3. A Geometric Sequence can also have smaller and smaller values.
Given First term a 10.
The following series is geometric. For example the sequence 1 3 9 27 81 is a geometric sequence. General form of geometric progression. A 10 the first term r 3 the common ratio The Rule for any term is.