# Differential Equations Forum

Differential Equations Help Forum

1. ### DE Tutorial - Part IV: Laplace Transforms

• Replies: 1
• Views: 3,415
Feb 9th 2011, 12:56 AM
2. ### DE Tutorial - Part I: First Order Equations and Homogeneous Second Order Equations

• Replies: 5
• Views: 21,037
Mar 15th 2010, 12:44 PM
3. ### DE Tutorial - Part III: Systems of Differential Equations

• Replies: 2
• Views: 3,131
Aug 29th 2009, 09:03 PM
4. ### DE Tutorial - Part II: Nonhomogenous Second Order Equations and Their Applications

• Replies: 4
• Views: 5,910
Dec 27th 2008, 09:56 AM
1. ### First order diffrential equations.

• Replies: 2
• Views: 481
Jul 30th 2010, 11:07 PM
2. ### Differential equations/ separable

• Replies: 4
• Views: 615
Jul 29th 2010, 06:18 PM
3. ### linear fourth-order ODE y''''+2y'''+6y''+8y'+8y=0

• Replies: 1
• Views: 679
Jul 29th 2010, 08:18 AM
4. ### Decay of a Decay. Is the diff eqn correct

• Replies: 2
• Views: 607
Jul 29th 2010, 02:40 AM
5. ### Rankine Hugoniot Satisfy Weak Solution

• Replies: 8
• Views: 659
Jul 28th 2010, 01:22 PM
6. ### Diff. Equation

• Replies: 1
• Views: 630
Jul 28th 2010, 10:18 AM
7. ### Unconditionally stable scheme for solving first order system of PDEs

• Replies: 1
• Views: 543
Jul 28th 2010, 07:45 AM
8. ### [SOLVED] Implicit Differential Problem

• Replies: 7
• Views: 380
Jul 27th 2010, 10:10 AM
9. ### Proof of Gronwall's Inequality

• Replies: 3
• Views: 1,736
Jul 27th 2010, 09:01 AM
10. ### [SOLVED] Re-writing higher order spatial derivatives as lower order system

• Replies: 11
• Views: 905
Jul 27th 2010, 08:56 AM
11. ### Need help solving 2 different differential equations (partially solved, but stuck)

• Replies: 10
• Views: 1,366
Jul 26th 2010, 05:02 PM
12. ### Spring-Mass system (with damping force AND impressed force). Find Position fcn.

• Replies: 21
• Views: 3,001
Jul 26th 2010, 04:13 PM
13. ### Express f(t) in terms of unit step functions, then find the Laplace

• Replies: 5
• Views: 2,418
Jul 26th 2010, 11:04 AM
14. ### Variable Coeff: y' - (x^2)y = 0

• Replies: 3
• Views: 573
Jul 26th 2010, 04:31 AM
15. ### Differential equation in a distribution space

• Replies: 3
• Views: 737
Jul 25th 2010, 07:49 AM
16. ### Solve differential equation using "Power Series"

• Replies: 22
• Views: 3,004
Jul 25th 2010, 07:47 AM
17. ### Taylors approximation problem

• Replies: 2
• Views: 396
Jul 25th 2010, 12:15 AM
18. ### Carbon dating problem

• Replies: 2
• Views: 878
Jul 24th 2010, 01:34 AM
19. ### Nonhomogeneous wave equation with vanishing initial conditions

• Replies: 0
• Views: 753
Jul 23rd 2010, 12:21 PM
20. ### Nonlinear ODE

• Replies: 4
• Views: 494
Jul 23rd 2010, 10:01 AM
21. ### Equilibrium stable or unstable - differential euqation

• Replies: 20
• Views: 2,018
Jul 23rd 2010, 08:34 AM
22. ### [SOLVED] Fourier Transform of x^2*sin(x)

• Replies: 25
• Views: 1,400
Jul 22nd 2010, 03:42 PM
23. ### Simple equation - question

• Replies: 6
• Views: 437
Jul 22nd 2010, 05:47 AM
24. ### first order ODE problem

• Replies: 1
• Views: 384
Jul 21st 2010, 08:55 PM
25. ### How to solve non-linear 1st order DE

• Replies: 1
• Views: 590
Jul 21st 2010, 11:20 AM
26. ### [SOLVED] Tricky Partial Differential problem

• Replies: 16
• Views: 1,423
Jul 20th 2010, 04:21 PM
27. ### Wave Equation with Gravity

• Replies: 11
• Views: 2,557
Jul 20th 2010, 11:51 AM
28. ### Analytic soln to a 1st order nonlinera DE

• Replies: 0
• Views: 421
Jul 20th 2010, 11:05 AM
29. ### [SOLVED] ODE with Driac Delta Function

• Replies: 13
• Views: 624
Jul 20th 2010, 07:06 AM

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### orthogonal trajectories of exponential function

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