Question

Answer fast.................​

Answer 1

Answer:

answer is no

Step-by-step explanation:

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Answer 2

Checking the series:

Step-by-step explanation:

$\ Given \ value:\\\\\ a_n = \ 3n^2 \ - \ 5\\\\\ put \ the \ n\ = 1, 2, 3,..... \ in \ given \ value :\\\\\ Series : \\\\3(1)^2-5 , 3(2)^2- 5, 3(3)^2-5, ....... \\\\\rightarrow \ 3(1)\ - \ 5, 3(4)-5, 3(9)-5\\\\\rightarrow \ 3-5, 12-5, 27-5, .......\\\\\rightarrow \ -2, 7, 22, .......\\\\\ condition \ of \ AP: \ 2b=a+c\\\\\ a= -2\\\\b= 7 \\\\c= 22\\\\\ Put \ the \ above \ value \ in \ ap \ condition:\\\\2\times 7 = -2+ 22\\\\ 14 = 20\\\\\ So \ the \ calculated \ series \ is \ not \ in\ AP.$

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• Series: https://brainly.in/question/13385188