Answer
$a_1 = -3
\\a_2 = 9
\\a_3 = -27
\\a_4 = 81$
Work Step by Step
To find the first four terms of the given sequence, substitute 1, 2, 3, and 4 to $n$, respectively, then simplify.
$a_1 = (-3)^1 = -3
\\a_2 = (-3)^2 = (-3)(-3) = 9
\\a_3 = (-3)^{3} = (-3)(-3)(-3)=-27
\\a_4 = (-3)^4 = (-3)(-3)(-3)(-3)=81$
