Question

Check whether n2 + 1 can be the nth term of an AP.
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Answer 1

Answer:

Hence, the nth term cannot be n²+1 in an AP. n is an integer if d² - 4 d + 4a -4 is real, a perfect square and then its square root added to +d or -d is an even integer.

Step-by-step explanation:

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Answer 2

Answer:

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