Solving Diff EQs: Find Solution & Related Functions

  • Thread starter Thread starter mr_coffee
  • Start date Start date
  • Tags Tags
    Diff eq Fun
Click For Summary

Homework Help Overview

The discussion revolves around solving a differential equation and finding related functions. Participants are examining the correctness of specific terms within the equation and the implications of those terms on the solution process.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants are questioning the validity of a term in the equation, specifically whether it should be 1\sin(y) or i\sin(y). There are attempts to derive expressions based on this term, leading to different interpretations of the solution.

Discussion Status

The discussion is active, with participants sharing their interpretations and calculations. Some have noted discrepancies in their results and are considering reaching out to the professor for clarification on the problem setup.

Contextual Notes

There is mention of a program that generates random numbers for the equations, which may lead to variations in the problems presented to different students. This raises questions about the consistency and correctness of the problem as posed.

mr_coffee
Messages
1,613
Reaction score
1
more Diff EQ fun!

http://cwcsrv11.cwc.psu.edu/webwork2_files/tmp/equations/58/6217226076d5fd259f53ad1e3ed4071.png
Find such a solution and then give the related functions requested.
http://cwcsrv11.cwc.psu.edu/webwork2_files/tmp/equations/57/f15a6cea760ce4906a6ec16f9d29451.png
I submitted this:
http://cwcsrv11.cwc.psu.edu/webwork2_files/tmp/equations/fb/2d83d3f390393ffc52b32ad0bd9fbf1.png
which was wrong! wee!

Here is my work:
http://img8.imageshack.us/img8/9514/lastscan6bj.jpg
 
Last edited by a moderator:
Physics news on Phys.org
What's with the 1\sin (y) ? Are you sure it's not i\sin (y) ?
 
If it is indeed 1\sin (y) I get

F(x,y)=-7x^2-5x+e^y\left( 4\cos (y) + 5\sin (y)\right) =K

same as you.
 
yep that bad boy is definatley a 1, this program will randomly generate numbers, some people actually got 0's infront of theirs, i will e-mail the professor to see if the problem is working correctly!
 

Similar threads

  • · Replies 5 ·
Replies
5
Views
5K
Replies
7
Views
3K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 3 ·
Replies
3
Views
6K
  • · Replies 9 ·
Replies
9
Views
2K
Replies
2
Views
5K
Replies
4
Views
15K
Replies
5
Views
2K
  • · Replies 6 ·
Replies
6
Views
3K
  • · Replies 7 ·
Replies
7
Views
15K