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Fraction Problem

kuheli

New member
Oct 27, 2013
14
if b is the mean proportion between a and c ; prove that

(a^2 - b^2 + c^2) / (a^-2 - b^-2 + c^-2) = b^4
 

Petrus

Well-known member
Feb 21, 2013
739
Re: please help with this fraction problem

if b is the mean proportion between a and c ; prove that

(a^2 - b^2 + c^2) / (a^-2 - b^-2 + c^-2) = b^4
Hello,
Do you got any progress?
do you know what they mean with "b is the mean proportion between a and c"
\(\displaystyle b^2=ac\) put that on left side what do you got?


Regards,
\(\displaystyle |\pi\rangle\)
 

kuheli

New member
Oct 27, 2013
14
ya i got it .. thanks a lot :)