Question

3,1,-1,-3......
find the first term and common difference.

Answer 1

given series 3,1,-1,-3
common difference=a2-a1
=1-3
=-2
and 1 st term is 3
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Answer 2

Hello,


Question;-

3,1,-1,-3......
find the first term and common difference.

Method Of Solution;-

let to be first term "a' and it's CommOn difference 'd'.

We know that to find Common difference must be T2-T1 ,

Here,

T1=3

T2=1

Hence, Common difference =1-3=-2

Again, ACCORDING to the Question!+

First term if any in Arithmetic Sequence or Progression First Number Considered to be First term!

hence, First term=3