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

Academic Mathematics NCERT Class 10

Given: A.P. $3,\ 1,\ −1,\ −3, ..$.

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

Solution:

Given A.P. is $3,\ 1,\ −1,\ −3,......$

First term $a=3$

And common difference $d=a_2−a_1$

$=1−3$

$=−2$

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

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Updated on: 10-Oct-2022

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