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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? 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: 20,652 Thanks: 2085 
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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