
IIT JEE Entrance Exam
If P divides OA internally in the ratio lambda1 : lambda2 and Q divides OA externally in the ratio lambda1 : lambda2, then prove that OA is the harmonic mean of OP and OQ
If P divides OA internally in the ratio lambda1 : lambda2 and Q divides OA externally in the ratio lambda1 : lambda2, then prove that OA is the harmonic mean of OP and OQ




