My Math Forum  

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

Differential Equations Ordinary and Partial Differential Equations Math Forum


Reply
 
LinkBack Thread Tools Display Modes
May 1st, 2017, 07:46 AM   #1
Newbie
 
Joined: May 2017
From: Copenhagen

Posts: 1
Thanks: 0

Differentiating x(t)

I'm having trouble with an entry-level exercise in my differential equations class, and I feel very stupid as this shouldn't be too hard. I think I'm missing some basic knowledge about how to differentiate these kinds of problems. Here is a picture of the problem along with my thoughts:

http://i.imgur.com/LIlv5fC.png

I understand that I need to use the chain rule to differentiate, but I'm not sure how to apply it in this case.
tobberthyk is offline  
 
May 1st, 2017, 02:32 PM   #2
Global Moderator
 
Joined: Dec 2006

Posts: 17,139
Thanks: 1281

Make sure you know the product rule for differentiating a product.

The derivative of $\text{x}^2\!$ with respect to $\text{t}$ is $2\text{x}\dot{\text{x}}$.

You could differentiate the given solution and then multiply both sides by $\text{x}$, etc.
skipjack is offline  
Reply

  My Math Forum > College Math Forum > Differential Equations

Tags
differentiating



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Help differentiating. Lucida Calculus 1 November 21st, 2012 02:57 PM
Differentiating e jskrzy Calculus 5 November 19th, 2012 10:05 AM
Differentiating pomazebog Calculus 4 March 18th, 2012 05:40 PM
Differentiating David_Lete Calculus 1 June 9th, 2010 05:49 AM
Help with Differentiating 450081592 Calculus 2 January 30th, 2010 09:29 PM





Copyright © 2017 My Math Forum. All rights reserved.