Show that the sum of an A.P. whose first term is a, the second term is b and the last term is c, is
Channel: Doubtnut
Date: 2019-12-27

Show that the sum of an A.P. whose first term is a, the second term is b and the last term is c, is equal to `((a+c)(b+c?2a))/(2(b?a))

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