00:02
So we want to find the first part of terms of our sequence.
00:06
So let's start with 8 -1.
00:08
This is equal to negative 1 to the power of 1 plus 1, so that's 2, and then 7 times 1.
00:13
So that's equal to a 7.
00:15
And then we have a 2, that's negative 1, to the power of 2 plus 1, 3, and then 7 times 2.
00:21
So not that this power is odd, so we take on a negative value, and 7 times 2 is a 14, and then we have 8 -3, that's negative 1, to the power of 4, and 7 times 3.
00:32
But this is even, so we take on a positive value...