Q. 54.5( 4 Votes )

If are in A.P. and a + b + c ≠ 0, prove that are in A.P.

Answer :

Given: a + b + c ≠ 0


and are in AP


To Prove: are in AP


if are in AP


[multiplying each term by a + b + c]


i.e. if are in AP


which is given to be true


Hence, are in AP


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