3.) $a_{n}=-\frac{5}{n}$
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Question
3.)
Best Answer
Step 1 - Write the sequence starting from index 1:
The sequence terms are:
Step 2 - We can find the Sum of the first n terms of the sequence using the formula:
By substituting the value of , we solve for the formula of .
Step 3 - Simplify the formula by using the Harmonic Number formula:
Step 4 - Write the final answer:
Answer:
Harmonic Number and Sequence Summation in Series
The sequence terms are:
Step 2 - We can find the Sum of the first n terms of the sequence using the formula:
By substituting the value of
Step 3 - Simplify the formula by using the Harmonic Number formula:
Step 4 - Write the final answer:
Answer:
Harmonic Number and Sequence Summation in Series