show that the sequence(2n²+1) is not an A.P
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put n=1,2,3,4...........
Then the Series Form is
3,7,19,33.......
And for A.P. Difference = 7-3=5 but is does not equal to 19-7=12 And so on...
So we can say that this series is not An A.P.
Then the Series Form is
3,7,19,33.......
And for A.P. Difference = 7-3=5 but is does not equal to 19-7=12 And so on...
So we can say that this series is not An A.P.
ritika5885:
thanku
there is on mistake 7 places to come 9
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solution is attached here
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