Simplify the explicit formula an=3+(−2)⋅(n−1)a_{n}=3+\left(-2)\cdot(n-1\right) into standard linear form.

15. Sequences, Series, and the Binomial Theorem

15. Sequences, Series, and the Binomial Theorem / Arithmetic Sequences / 문제 4

문제 4

Simplify the explicit formula $a_{n} = 3 + (- 2) \cdot (n - 1)$ into standard linear form.

$a_{n} = 5 - 2 n$

$a_{n} = 9 - 7 n$

$a_{n} = 5 - n$

$a_{n} = 9 - 2 n$