QuestionFind a formula for $a_{n}$ based on the sequence: -4, 9, -14, 19, -24. What is $a_{n}=$?

Studdy Solution
Now, we need to account for the alternating sign. We can do this by multiplying the absolute value by $(-1)^n$.
$$a_n = (-1)^n (5n +4)$$This formula will give us the nth term of the sequence.