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If sum of first m+n terms …

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If sum of first m+n terms is 0 , prove that sum of first m terms is equal to the sum of first n terms .

    • Posted by Sourav Chichra 4 years, 6 months ago

    CBSE > Class 11 > Mathematics
    • 1 answers

    Abhay Sahal 4 years, 6 months ago

    First take out value of d from m+n[2a+(m+n-1)d]=0 ie d=-2a/m+n-1 Then put this value of d separately in the sum of m and n Solve them they will come equal Use this formula of sum n/2[2a+(n-1)d]

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