My Math Forum  

Go Back   My Math Forum > College Math Forum > Differential Equations

Differential Equations Ordinary and Partial Differential Equations Math Forum


Thanks Tree3Thanks
  • 1 Post By harley05
  • 1 Post By skipjack
  • 1 Post By harley05
Reply
 
LinkBack Thread Tools Display Modes
April 20th, 2015, 03:53 PM   #1
Member
 
Joined: Apr 2014
From: australia

Posts: 68
Thanks: 32

Separable ODE

Hello,
which of these equations are separable ODEs?

(a) $\displaystyle (dy/dx)^2 = [\ln^2(1+x) /(x+1)^4]y $

(b) $\displaystyle \ln(1+x)(dy/dx) + [(\sin x) /(1+x^2)]y = 0$

(c) $\displaystyle 8y - (\sin2x/2x)(dy/dx) + (\sin x) /(1+x^2) = 0$

(d) $\displaystyle \sqrt{1+y} = \cos2x(dy/dx)$

I get (a), (b) & (d).

Thanks in advance.
Thanks from Yury Stepanyants

Last edited by skipjack; April 20th, 2015 at 04:27 PM.
harley05 is offline  
 
April 20th, 2015, 04:30 PM   #2
Global Moderator
 
Joined: Dec 2006

Posts: 20,937
Thanks: 2210

You are correct.
Thanks from harley05
skipjack is offline  
April 20th, 2015, 04:31 PM   #3
Member
 
Joined: Apr 2014
From: australia

Posts: 68
Thanks: 32

thanks for confirming
Thanks from Yury Stepanyants
harley05 is offline  
Reply

  My Math Forum > College Math Forum > Differential Equations

Tags
ode, separable



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
ODE/ separable or not harley05 Differential Equations 2 March 25th, 2015 10:46 PM
Separable covariance meaning dervast Advanced Statistics 0 January 17th, 2011 05:22 AM
separable differential equations siddharth Differential Equations 4 December 18th, 2010 05:20 PM
Separable DE - What am I doing wrong? collegekid Calculus 4 October 16th, 2009 04:02 PM
Separable Equations DFQ cheertcc101 Calculus 1 January 20th, 2009 02:51 AM





Copyright © 2019 My Math Forum. All rights reserved.