Ответы на вопрос:
An= A1 + d*(n-1)
A2 = 7 + (-2)*(2-1) = 7-2 = 5
A3 = 7 + (-2)*(3-1) = 7 -2*2 = 7-4 = 3
A4 = 7 + (-2)*(4-1) = 7 -2*3 = 7-6 = 1
A5 = 7 -2*(5-1) = 7 -2*4 = 7-8 = -1
Популярно: Алгебра
-
lolgg206.08.2021 16:00
-
oksukbaevak07.09.2021 11:57
-
gluilivti11.12.2022 00:59
-
Domashka0020.12.2020 07:14
-
bugaerstasy04.10.2020 10:49
-
Азик116623.11.2020 00:04
-
Медет11111121.10.2022 11:51
-
Enigma126719.03.2023 09:13
-
yadianamelnik18.07.2020 00:53
-
alena67916.02.2022 20:09