FORMULA OF Arithmetic SEQUENCE
FORMULA IN ARITHMETIC SEQUENCE An arithmetic sequence is a sequence in which the difference between each consecutive term is constant. An arithmetic sequence can be defined by an explicit formula in which a n = d ( n - 1) + c , where d is the common difference between consecutive terms, and c = a 1 . An arithmetic sequence can also be defined recursively by the formulas a 1 = c , a n+1 = a n + d , in which d is again the common difference between consecutive terms, and c is a constant. There are two ways to find the sum of a finite arithmetic sequence. To use the first method, you must know the value of the first term a 1 and...