00:02
In order to give the first six terms of this sequence, base of n equals 1 plus negative 1 to the n power, what you need to realize is if they want a certain number term, that's the number you put in for n.
00:17
So the first term is going to be plugging 1 in for n.
00:22
And there's two places to plug in 1.
00:28
And negative 1 to the first power just stays the same.
00:31
Negative 1 and 1 plus negative 1 is 0.
00:34
But then you have to go to the second term, which is plugging 2 in for n.
00:41
So a sub 2 is going to equal 1 plus negative 1 squared, this n.
00:48
And just think about it.
00:49
If you square a negative, a negative 1 times negative 1 is positive 1.
00:53
1 plus 1 is 2.
00:55
And then we have to do the third term.
00:57
So n equals 3.
01:01
Hopefully you see the pattern...