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how to find the general formula for a geometric sequence. The formula for the sum of the first. The general form of the sequence is a 1 a 1 r 2 a 1 r 3 a 1 r 4 a 1 r n 1We dont always want to write out the entire sequence all the time so instead of writing everything out 5 10 20 40 80 160 we can use a much shorter formula.
How To Find The General Term Of Sequences In 2020 Subtraction Methods Geometric Sequences Arithmetic from in.pinterest.com
The general geometric sequence can be expressed as. The general formula to find the nth term is. Given the first several terms of a geometric sequence write its recursive formula.
The general form of the sequence is a 1 a 1 r 2 a 1 r 3 a 1 r 4 a 1 r n 1We dont always want to write out the entire sequence all the time so instead of writing everything out 5 10 20 40 80 160 we can use a much shorter formula.
Therefore lets first find what the nth term is and then move on to the details of its evaluation with different examples. And the 10th term is. X 4 10 3 4-1 10 3 3 10 27 270. Just follow these steps.
