
Differential Equations Ordinary and Partial Differential Equations Math Forum 
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September 11th, 2012, 12:32 AM  #1 
Newbie Joined: Sep 2012 Posts: 4 Thanks: 0  differential equations
solve the following equations 1.(x^2+1)dy/dx=4x/y 2. dy/dx=0.7y 3.dg/dx=(4g7)(3x+1) 
September 11th, 2012, 12:55 AM  #2 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,211 Thanks: 521 Math Focus: Calculus/ODEs  Re: differential equations
Let's start with the first one...try separating the variables and integrating. What do you find?

September 11th, 2012, 09:27 AM  #3  
Math Team Joined: Dec 2006 From: Lexington, MA Posts: 3,267 Thanks: 408  Re: differential equations Hello, thebigbeast! These are all "variables separable" ... the very simplest Differential Equations. Do you know how to solve them? Quote:
 

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