Предмет: Математика, автор: nani8390

Найдите 10-й член арифметической прогрессии (аn), если а1 = 1 и d = 4.

Ответы

Автор ответа: p15

Ответ:

Пошаговое объяснение:

an=a1+(n-1)d

a10=1+(10-1)*4=37

_________________

Утерян "лучший ответ". Нашедшему просьба вернуть.

nani8390: А суть вопроса вся такая же

p15: 3 - Нет. Т.к. члены уменьшаются. Хочешь больше - оформляй задачу. Точно не -3?

nani8390: Бляя извини если ты не так понял А1 = - 2 1/2 А8 = 2 3/4

p15: а8 равно минус 2целых?

nani8390: Не не А 8 = 2 3/4 ( без минуса )

p15: тогда надо считать

nani8390: Ну ты сможешь ?

p15: Не я так кто-то другой:)

p15: только не ошибись в условии. от этого многое зависит

nani8390: Хорошо , спасибо

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