For the following A.P's write the first term and common difference: $3,\ 1,\ βˆ’1,\ βˆ’3, ..$.


Given: A.P. $3,\ 1,\ βˆ’1,\ βˆ’3, ..$.

To do: To write the first term and common difference of the given A.P.

Solution:

Given A.P. is $3,\ 1,\ βˆ’1,\ βˆ’3,......$

First term $a=3$ 

And common difference $d=a_2βˆ’a_1$
​
$=1βˆ’3$

$=βˆ’2$

Thus, First term is $3$ and  common difference is $-2$.

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Updated on: 10-Oct-2022

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