Formula
$$a_n = a_1 + (n-1)\cdot d$$
Variables
an
→
n- th term
a1
→
First term
d
→
Difference
n
→
Number of terms
Tags
Derived formulas
$d=\dfrac{a_n - a_1}{n-1}$
$n=\dfrac{a_n-a_1+d}{d}$