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Show that the sum of (m+n)th …

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Show that the sum of (m+n)th and (m-n)th terms of an AP is equal twice to mth term
  • 1 answers

Tushar Sindhu??? 5 years, 9 months ago

(m+n)th term is a+(m+n-1)d and (m-n)th term is a+(m-n-1)d and mth term is a+(m-1)d .now add both of them a+(m+n-1)d+a+(m-n-1)d =2 (a+(m-1)d)
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