Q: What are the 1st 5 terms of arithmetic sequence w first term a1 equals 12 d equals -2?

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6

a1=2 d=3 an=a1+(n-1)d i.e. 2,5,8,11,14,17....

That's an arithmetic sequence.

arithmetic sequence

No, the Fibonacci sequence is not an arithmetic because the difference between consecutive terms is not constant

The nth term of an arithmetic sequence = a + [(n - 1) X d]

The sequence is arithmetic if the difference between every two consecutive terms is always the same.

No. An 'arithmetic' sequence is defined as one with a common difference.A sequence with a common ratio is a geometricone.

49

Arithmetic Sequence

An arithmetic sequence.

arithmetic sequence this is wrong

2

29

The sum of the first 12 terms of an arithmetic sequence is: sum = (n/2)(2a + (n - 1)d) = (12/2)(2a + (12 - 1)d) = 6(2a + 11d) = 12a + 66d where a is the first term and d is the common difference.

The difference between successive terms in an arithmetic sequence is a constant. Denote this by r. Suppose the first term is a. Then the nth term, of the sequence is given by t(n) = (a-r) + n*r or a + (n-1)*r

3925

It is a progression of terms whose reciprocals form an arithmetic progression.

An arithmetic sequence.

in math ,algebra, arithmetic

An arithmetic series is the sequence of partial sums of an arithmetic sequence. That is, if A = {a, a+d, a+2d, ..., a+(n-1)d, ... } then the terms of the arithmetic series, S(n), are the sums of the first n terms and S(n) = n/2*[2a + (n-1)d]. Arithmetic series can never converge.A geometric series is the sequence of partial sums of a geometric sequence. That is, if G = {a, ar, ar^2, ..., ar^(n-1), ... } then the terms of the geometric series, T(n), are the sums of the first n terms and T(n) = a*(1 - r^n)/(1 - r). If |r| < 1 then T(n) tends to 1/(1 - r) as n tends to infinity.

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The sequence in the question is NOT an arithmetic sequence. In an arithmetic sequence the difference between each term and its predecessor (the term immediately before) is a constant - including the sign. It is not enough for the difference between two successive terms (in any order) to remain constant. In the above sequence, the difference is -7 for the first two intervals and then changes to +7.

The first four terms are 3 9 27 81 and 729 is the 6th term.

1, -3, -7

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