The sum of the first \( n \) terms of a series is given by the formula \( n^2 \). What is the formula for the \( n \)-th term?
University of Ilorin MTH101 salang past question
- \( 2n - 1 \)
- \( n^2 - (n-1)^2 \)
- \( n + (n-1) \)
- \( n^2 - 1 \)
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