0:00
Recall that is sequence.
00:02
When it's given in the a to the k -4, i can plug in my different index is k, right, my first term, second term, fourth term, fifth term, and so on and so forth, and figure out what my first couple terms are.
00:13
So let's say i plugged in k equals 1.
00:16
This would be negative 1 to the 1 minus 1 times x to the 2 times 1, which is 2 over 2 times 1 factorial.
00:25
This would go away, and this would just be x squared over 2 factorial, 2 times 2 is 2.
00:31
It would be my first term.
00:33
What about k equals 2? this index would indicate this is my second term, and i'm just replacing my k value with 2.
00:41
X to the 2 times 2 is 4, all over 2 times 2 is 4 factorial.
00:47
This would be approximately 2 minus 1 is going to be negative...