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Question
Is the following sequences are A.P.? If is A.P. find the common difference.
Solution
`-1/5, -1/5, -1/5,...`
Here, `t_1=-1/5,t_2=-1/5,t_3-1/5`
t2 - t1 = `-1/5-(-1/5)=-1/5+1/5=0`
t3 - t2 = `-1/5-(-1/5)=-1/5+1/5=0`
The difference between two consecutive terms is constant.
Hence, the given sequence is an A.P. and the common difference (d) is 0.
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