Question
Find the first term and common difference of the Arithmetic Progressions whose $n ^{\text {th }}$ term is given below
$t_n=-3+2 n$
$t_n=-3+2 n$
✓
Answer
a $= t _1=-3+2(1)$
$=-3+2=-1$
$d=t_2-t_1$
$\text { Here } t_2=-3+2(2)$
$=-3+4=1$
$\therefore d=t_2-t_1$
$=1-(-1)=2$
$=-3+2=-1$
$d=t_2-t_1$
$\text { Here } t_2=-3+2(2)$
$=-3+4=1$
$\therefore d=t_2-t_1$
$=1-(-1)=2$
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