Common Difference d
In mathematics, the term “common difference” refers to the constant difference between any two consecutive terms in an arithmetic sequence or progression
In mathematics, the term “common difference” refers to the constant difference between any two consecutive terms in an arithmetic sequence or progression.
An arithmetic sequence is a sequence of numbers where the difference between any two consecutive terms is always the same. This constant difference is called the common difference, denoted by the letter “d”.
For example, consider the arithmetic sequence: 2, 5, 8, 11, 14, …
In this sequence, the common difference is 3. When you subtract any term from its preceding term, you always get 3 as the result. For instance, 5 – 2 = 3, 8 – 5 = 3, and so on.
To express the pattern of an arithmetic sequence with its common difference, we use the formula:
An = A1 + (n-1)d
where An is the nth term of the sequence, A1 is the first term of the sequence, n is the position of the term in the sequence, and d is the common difference.
Understanding the concept of common difference is crucial in solving problems involving arithmetic sequences and progressions. By identifying the common difference, you can determine missing terms, find the general formula for the sequence, or calculate the sum of a given number of terms.
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