Find the indicated term of each aithmetic sequence28th term; 0,-4,-8,-12 过程最重要.不然看了答案也不会算.

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Findtheindicatedtermofeachaithmeticsequence28thterm;0,-4,-8,-12过程最重要.不然看了答案也不会算.Findtheindicatedterm

Find the indicated term of each aithmetic sequence28th term; 0,-4,-8,-12 过程最重要.不然看了答案也不会算.
Find the indicated term of each aithmetic sequence
28th term; 0,-4,-8,-12 过程最重要.不然看了答案也不会算.

Find the indicated term of each aithmetic sequence28th term; 0,-4,-8,-12 过程最重要.不然看了答案也不会算.
规律为：（-4）*（n-1）
第28项为：（-4）*（28-1）＝-108

0 = (-4)×0
-4 = (-4)×1
-8 = (-4)×2
-12 = (-4)×3
因此通项公式形式为y = -4n