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If are in A.P. are in H.P. and are in G.P., then is equal to
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a
ac+ca
b
ac-ca
c
bq+qb
d
bq-qp
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Correct option is A
According to the given condition 2b=a+c,q=2prp+r and b2q2=(ap)(cr)Substituting values of b and q from first two expressions in the last expression, we get (a+c)242prp+r2=(ac)(pr)⇒ (a+c)2ac=(p+r)2pr ⇒ ac+ca=pr+rpSimilar Questions
Given that
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