Now let us consider an infinite many terms. So far, we have found the sum of finitely many terms. Dividing the expression by (1-r) gives the result. Here, the last equality results from the expression of the sum of geometric progression. Here, S n is the sum of the terms of the sequence and A n and G n are the nth term of the arithmetic and the geometric sequence respectively. The sum of the first n terms of an arithmetic geometric sequence can be written in the following form. Sum of Terms of Arithmetic Geometric Sequence is a geometric sequence as each number has to be multiplied by 2 in order to get the next number in the series. Thus, in the case of a geometric sequence, each number moves from one term to the next by always multiplying or dividing by the same common value or number. Geometric sequence or progression refers to a sequence of non-zero numbers where each term after the first one is found by multiplying the previous one by an unchangeable non-zero number, called a common ratio. Thus, an arithmetic sequence can be written in the following form:Ī, a+d, a+2d,…………………….a +(n-2)d, a+(n-1)dĪ + (n-1) d is the nth term of Arithmetic Sequence. It is essential to mention here that the number that is added or subtracted at each level of the arithmetic sequence is called the difference and is usually represented by ‘d’. Let us assume the sequence of 3,9,15,21,27… Here in this sequence, each number moves to the second number by adding or subtracting the value of 6.
An arithmetic sequence can be regarded as an ordered set of numbers that have a common difference in terms of value between each consecutive term.
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