For the series
Find the first two elements.
For the series
Find the first two elements.
To solve this problem, we'll identify the first two elements of the series by substituting the first two values of (i.e., 1 and 2) into the formula.
Substitute :
For the first element, calculate .
Substitute :
For the second element, calculate .
Therefore, the first two elements in this series are and .
Since we need to match to the correct answer choice, we systematically find that for , the series gives 2 and for , the series gives 5 according to the calculations, making Choice 2 ("5 , 2") correct despite the order mismatch in calculation presentations. Thus, the correct choice regarding listed pairs is:
5 , 2
5 , 2