Final answer:
To find the partial sums of a sequence, you start by adding the first term, then the first two terms, then the first three terms, and so on. The nth partial sum is the sum of the first n terms of the sequence.
Step-by-step explanation:
The question asks to find the first four partial sums and the nth partial sum of a given sequence. To find the partial sums of a sequence, you start by adding the first term, then the first two terms, then the first three terms, and so on. The nth partial sum is the sum of the first n terms of the sequence.
For example, if the sequence is 1, 2, 3, 4, 5, the first four partial sums would be 1, 3, 6, 10, and the nth partial sum would be the sum of all the terms in the sequence.