- #1

zorro

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## Homework Statement

Is this statement correct?

If the nth term of a sequence is a quadratic expression in n, then the sequence is an A.P.

## Homework Equations

## The Attempt at a Solution

Take arbitrary t(n)=n^2-2n-2

I substituted 1,2,3 in the above expression and noted the c.d.

It is not constant.

But the book says that this statement is correct.

Any ideas?