00:01
We're being asked to write out the sum for the sequence defined by the formula 2k plus 1 for when k is equal to 0 up until when k is equal to m minus 1.
00:09
So first we're going to find the first couple terms in the sequence.
00:13
So to find the first term in the sequence, we substitute 0 in place of k.
00:16
So we would have 2 times 0 plus 1.
00:19
Well, 2 times 0 is 0 plus 1 is 1.
00:22
So the first term in the sequence is 1.
00:25
Now to find the second term in the sequence, we need to substitute 1 in place of k.
00:29
So we have 2 times 1 plus 1.
00:32
Well, 2 times 1 is 2 plus 1 is 3.
00:35
So the second term is 3...