CalculatorsLesson 176Free preview

Arithmetic Sequence Calculator

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Summary

Arithmetic Sequence Calculator calculates the nth term and the first term of n of the arithmetic line. This row has a fixed difference d between successive tribes, so the formula of the n-th tribe is a + (n-1)d. The sum can be calculated by n/2 x (first squared + last squared).

Key points

Intertribal fixed differences are called differences (d)
Suku ke-n: a_n = a_1 + (n-1)d
Number of n triangles: S_n = n/2 x (a_1 + a_n)
Negative differences make the line down
The average of the triangles is equal to (a_1 + a_n)/2.

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