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If an AP consists of n terms with 1st term 'a' and nth term 'l' , show that the sum of the mth term from the beginning and the mth term from the end is (a + l) . |
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Answer» Answer: HEY mate!!!!! here is your answer!!!!!!!1 Here, MTH term from LAST = (N-m+1)th term from begining. Now Sum of mth term from begining and mth term from last = am + an-m+1 = a + (m - 1)d + a + (n - m + 1 - 1)d = 2a + (m - 1 +n - m)d = a + a + (n - 1)d = a + an = a + L hope it helps !!!!!!! plz mark me as brainliest!!!!!!! |
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