![]() |
|
Differential Equations Ordinary and Partial Differential Equations Math Forum |
![]() |
| LinkBack | Thread Tools | Display Modes |
May 5th, 2017, 06:22 PM | #1 |
Newbie Joined: Mar 2016 From: Australia Posts: 21 Thanks: 1 | Solution not matching with WolfRam
I'm checking my solution with WolfRam and it's not matching. I can't see where I'm going wrong, anything obvious I'm missing? Differential equation: $\displaystyle 3y''+y'-2y=4+2x+e^x$ Initial conditions: $\displaystyle y(0)=3, y'(0)=2$ My working: working_1.jpg working_2.jpg Last edited by max233; May 5th, 2017 at 06:38 PM. |
![]() |
May 6th, 2017, 12:39 AM | #2 |
Senior Member Joined: Jun 2015 From: England Posts: 796 Thanks: 233 | You should check by substituting your solution into the original differential equation to see whether $\displaystyle 3y'' + y' - 2y$ does indeed equal $\displaystyle 4 + 2x + {e^x}$ I'm not sure it does, but it is a deal of arithmetic and I might just as easily have made a mistake there as you. Last edited by skipjack; May 6th, 2017 at 04:56 AM. |
![]() |
May 6th, 2017, 05:07 AM | #3 |
Global Moderator Joined: Dec 2006 Posts: 18,847 Thanks: 1568 | |
![]() |
![]() |
|
Tags |
matching, solution, wolfram |
Thread Tools | |
Display Modes | |
|
![]() | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Wolfram-Alpha | ungeheuer | Math Software | 0 | August 21st, 2013 03:56 AM |
Divative result I get is diffeerent from wolfram's | rain | Calculus | 7 | July 28th, 2013 06:55 PM |
Wolfram Alpha | ungeheuer | Algebra | 10 | December 6th, 2012 07:44 PM |
News - Wolfram Alpha Pro Available | TomF | Math Software | 0 | February 11th, 2012 04:09 PM |