The sum of the first 11 terms of the arithmetic series with the first term $a_1=-12$ and common difference $d=5$ can be determined using the arithmetic series sum formula. In an arithmetic sequence, each term after the first is found by adding the common difference to the preceding term. This characteristic leads to a predictable […]

# Category Archives: Arithmetic

To find the sum of an arithmetic sequence, I begin by identifying its first and last terms, as well as the common difference between consecutive terms. An arithmetic sequence is a list of numbers with a constant difference between each pair of successive numbers. For instance, in the sequences 2, 5, 8, 11, the common […]

The common difference in the arithmetic sequence 7, 3, –1, –5, … is –4. In any arithmetic sequence, the common difference is obtained by subtracting a term from the subsequent term. For clarity, if we take the second term, 3, and subtract the first term, 7, we get 3 – 7 = –4. If I […]

An arithmetic sequence is a series where each term increases by a constant amount, known as the common difference. I’ve always been fascinated by how this simple pattern appears in many mathematical problems and real-world situations alike. Understanding this concept is fundamental for students as it not only enhances their problem-solving skills but also introduces […]

To find an arithmetic sequence, I first identify the common difference between consecutive terms. This difference is constant and is denoted by (d). For any given arithmetic sequence, the (n)th term can be calculated using the formula $a_n = a_1 + (n-1)d$, where $a_1$ is the first term and (n) is the term number. Finding […]