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February 22nd, 2012, 04:46 AM  #1 
Newbie Joined: Oct 2011 Posts: 3 Thanks: 0  How to separate x or solve for x
w=a*b*c^3*x*?(pie^2 * (ix^2)^2 + 16 *x^2)/ 4*d^2 *(1x^2)^2 I have to find x ,i have the values of all other constants , I tried to separate it using partial fraction but I am stuck. 
February 22nd, 2012, 05:59 AM  #2 
Global Moderator Joined: Nov 2009 From: Northwest Arkansas Posts: 2,766 Thanks: 4  Re: How to separate x or solve for x I added some LaTex markup. If you would like help in solving problems, you should at least make it legible! See the link below. You can "Quote" this reply, then edit my math equation and use the preview button to make sure you got it right. 
February 22nd, 2012, 06:35 AM  #3 
Newbie Joined: Oct 2011 Posts: 3 Thanks: 0  Re: How to separate x or solve for x
[quote="arslan894"][quote="The Chaz"] the correct equation is like this . 
February 22nd, 2012, 07:19 AM  #4  
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,597 Thanks: 1038  Re: How to separate x or solve for x Quote:
Let u = 4wd^2, v = abc^3 and p = (pi)^2 u(1  x^2)^2 = vxSQRT[p(1  x^2)^2 + 16x^2] ; square both sides: u^2(1  x^2)^4 = v^2 x^2[p(1  x^2)^2 + 16x^2] u^2(1  x^2)^4 = p v^2 x^2(1  x^2)^2 + 16v^2 x^4 I quit!  
February 22nd, 2012, 07:31 AM  #5 
Global Moderator Joined: Nov 2009 From: Northwest Arkansas Posts: 2,766 Thanks: 4  Re: How to separate x or solve for x
Denis, don't make me give you a lecture about LaTex, too! 
February 22nd, 2012, 01:23 PM  #6 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,597 Thanks: 1038  Re: How to separate x or solve for x
Very drole, Sir Chaz! So we can get down to this (if I haven't goofed): u^2(1  x^2)^4 = p v^2 x^2(1  x^2)^2 + 16v^2 x^4 If it had turned out like: A(1  x^2)^4 + B(1  x^2)^2 + C = 0 then we'd have a quadratic, and solve by something like k = (1  x^2)^2 : Ak^2 + Bk + C = 0 ....soooooo I wonder if there's a typo in the original problem. 

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