My Math Forum  

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

Differential Equations Ordinary and Partial Differential Equations Math Forum

LinkBack Thread Tools Display Modes
March 21st, 2019, 04:40 AM   #1
Joined: Jul 2018
From: Australia

Posts: 2
Thanks: 0

Help classifying DEs

I need help classifying the following differential equations as:

- linear
- Bernoulli equation
- separable
- exact
- homogeneous
- both linear and exact
- both linear and separable
- both Bernoulli and separable

a) $\displaystyle dy/dx = y^2/x^2 - x/y$ (My answer: homogeneous)

b) $\displaystyle dy/dx = x/y - 2. y^3/x^3$ (My answer: homogeneous)

c) $\displaystyle (3x^2 - 2y^2 - ½.y.cos x) dx + (-4xy - ½.sin.x) dy = 0$ (My answer: exact)

I am not sure if my answers are correct or if there are more options.

Thanks for any advice.
tammyl is offline  
March 22nd, 2019, 03:46 AM   #2
Global Moderator
Joined: Dec 2006

Posts: 21,028
Thanks: 2259

Replied to here.
skipjack is offline  

  My Math Forum > College Math Forum > Differential Equations

classifying, des

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Help classifying DEs tammyl Differential Equations 1 March 22nd, 2019 03:37 AM
Classifying Functions Math_Junkie Calculus 12 October 3rd, 2009 03:22 PM
Markov chain and classifying states BrainMan Advanced Statistics 0 March 16th, 2009 04:41 PM
Classifying PDEs as elliptic, parabolic and hyperbolic help fzeropro Applied Math 2 July 20th, 2008 03:20 AM

Copyright © 2019 My Math Forum. All rights reserved.