Final answer:
To convert a given expression into sigma notation, identify the pattern of the terms and express the sequence using the sigma symbol, with the appropriate starting index, ending index, and the expression for the general term.
Step-by-step explanation:
The subject in question is mathematics, specifically involving the use of sigma notation. In order to convert a given expression into sigma notation, it is necessary to identify the pattern of the terms in the series. For example, if the expression represents the sum of consecutive integers starting from 1 up to n, the sigma notation would be written as:
Σ_{i=1}^{n} i
This represents the sum of all values 'i', where 'i' starts at 1 and increments by 1 each time, continuing until it equals 'n'. If the expression included a more complex pattern, like the sum of squares of consecutive integers, the sigma notation would be:
Σ_{i=1}^{n} i^2
Again, 'i' represents each consecutive integer, but this time each integer is squared before it is summed. The bounds of summation (1 to n) are clearly indicated, showing where the series starts and ends.