:confused: find 'd' if sum of first 'm' term is 'xm^2+ym'?

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- November 24th 2006, 03:09 AManjanaarithematic progressions.
:confused: find 'd' if sum of first 'm' term is 'xm^2+ym'?

- November 24th 2006, 05:03 AMSoroban
Hello, anjana!

What a strange problem . . .

Quote:

Find if sum of first terms is: .

The sum of the first terms is: .

. . where is the first term and is the common difference.

So we have: .

. . which equals: .

Two polynomials are equal if their corresponding coefficients are equal.

. . Hence, we have: .

Without additional information, that's the best we can do.