Find the partial sum of a sequence of 25 terms

The video tutorial explains how to find the partial sum of an arithmetic sequence. It begins by introducing the concept of partial sums and the need for a formula to calculate them efficiently. The teacher then demonstrates how to derive the rule for the sequence using the difference between terms. The formula for the partial sum is applied to find the 25th term and calculate the sum of the sequence. The tutorial concludes with a practical example of calculating the sum using the derived formula.

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