Question
For the following arithmetic progressions write the first term a and the common difference d:
$-5, -1, 3, 7, ....$
$-5, -1, 3, 7, ....$
✓
Answer
A.P. is, $-5, -1, 3, 7, .......$
Here,
First term $a = -5$
Common difference,
$a_1 - a = -1 - (-5) = 4$
$a_2 - a_1 = 3 - (-1) = 4$
$d = 4$
Therefore $a = -5$ and $d = 4.$
Here,
First term $a = -5$
Common difference,
$a_1 - a = -1 - (-5) = 4$
$a_2 - a_1 = 3 - (-1) = 4$
$d = 4$
Therefore $a = -5$ and $d = 4.$
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