Question

Given an = -3n2 - 2

Find the first four terms in the sequence.
final the first four terms in the sequence.​

Answer 1

-5, -14, -29, -50

Explanation:

`a_n=-3n^2-2\\\\\text{Substitute the values of}\ n:\ \{1,\ 2,\ 3,\ 4\}\\\\a_1=-3(1^2)-2=-3(1)-2=-3-2=-5\\\\a_2=-3(2^2)-2=-3(4)-2=-12-2=-14\\\\a_3=-3(3^2)-2=-3(9)-2=-27-2=-29\\\\a_4=-3(4^2)-2=-3(16)-2=-48-2=-50`