Question

यदि A,B,C समांतर श्रेणी में हो तो सिद्ध करो कि -

$a( \frac{1}{b} + \frac{1}{c} ).b( \frac{1}{c} + \frac{1}{a} ).c( \frac{1}{a} + \frac{1}{b} ) \: in \: ap \:$

Answer 1

Answer in Attachment

hope it's help you

Regards (@sangela##)