Question

Записаны первые три члена арифметической прогрессии -4, 2, 8 какое число стоит в этой арифметической прогрессии на 81м месте

Answer 1

Решение смотри на фотографии

Answer 2

Arithmetic Progression Calculation

The first three terms of the arithmetic progression are -4, 2, 8. To find the number at the 81st position in this arithmetic progression, we can use the formula for the nth term of an arithmetic progression:

nth term (Tn) = a + (n-1)d

Where: - a = the first term - n = the position of the term - d = the common difference

In this case: - a = -4 - n = 81 - d = 2 - (-4) = 6

Plugging these values into the formula: T81 = -4 + (81-1) * 6

Let's calculate the value of the 81st term.