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The sum of fi...

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The sum of first n terms of an AP.,is zero ,show that the sum of next m terms is -am(m+n)/n-1,a being the first term

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If the sum of first m terms of an AP is n and the sum of first n terms is m , then show that sum of first (m+n) term is -(m+n).

Q. If in an AP the sum of first m terms= n and the sum of first n terms= m, prove that sum of (m+n) term is -(m+n).

Q. If the sum of first

m

terms of an AP be

n

and the sum of its first

n

m

then show that the sum of its first

(m + n)

- (m + n) .

Q. If the sum of the first

m

terms of an AP be

n

and the sum of its first

n

m

then show that the sum of its first term is

- (m + n)

The first term of an AP is a and the sum of the first p terms is zero, show that the sum of its next q terms is $\frac{- a (p + q) q}{p - 1}$

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