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 December 27th, 2012, 11:26 AM #1 Senior Member   Joined: Mar 2012 From: Belgium Posts: 654 Thanks: 11 how many times is a bigger then d Given these 2 equations with b as a constant, could one tell me how much times a is bigger then d so a=xd --> find x or is that not possible if b is not given? $b =\frac { (a (a^2+4))}{(2 (a^2-4))} b =\frac {(d (625 d^2+1296))}{(1250 d^2-2592)}$ Maybe it is possible to do something with derivatives? I don't know how to work with them, but I get the concept.
 December 28th, 2012, 04:48 PM #2 Global Moderator   Joined: Dec 2006 Posts: 20,370 Thanks: 2007 For a given real value of b, a and d can have either 1 real value or 3 real values, so there are various possibilities for x. What was the original problem?
 December 29th, 2012, 12:09 AM #3 Senior Member   Joined: Mar 2012 From: Belgium Posts: 654 Thanks: 11 Re: how many times is a bigger then d this was something i tried when i was trying to solve the area of the triangle here: viewtopic.php?f=13&t=37055 i used this formula and the b i used here is the distance from point A to the circle.

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