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let Tr be the rth term of an AP whose first term is a abd common difference is d is some positive integers m ,n ,m not equal to n , Tm=1÷n , Tn =1÷m then find the value of a-d
Tm = 1/nHencea + (m-1) d = 1/nSimilarlya + (n-1) d = 1/mNow solve both the equationsd = 1/mnHence a = 1/mnNow a-d = 0
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