# Differential Equations Forum

Differential Equations Help Forum

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

• Replies: 1
• Views: 3,369
Feb 8th 2011, 11:56 PM
2. ### DE Tutorial - Part I: First Order Equations and Homogeneous Second Order Equations

• Replies: 5
• Views: 20,972
Mar 15th 2010, 12:44 PM
3. ### DE Tutorial - Part III: Systems of Differential Equations

• Replies: 2
• Views: 3,062
Aug 29th 2009, 09:03 PM
4. ### DE Tutorial - Part II: Nonhomogenous Second Order Equations and Their Applications

• Replies: 4
• Views: 5,837
Dec 27th 2008, 08:56 AM
1. ### Proof of equality of finite sum, and trigonometric rational function

• Replies: 1
• Views: 543
Sep 30th 2010, 01:49 PM
2. ### Find a Particular Solution, given initial condition

• Replies: 3
• Views: 892
Sep 30th 2010, 09:33 AM
3. ### Critical points and phase portraits

• Replies: 5
• Views: 902
Sep 30th 2010, 09:27 AM
4. ### Can't get the correct error rate for RK4

• Replies: 0
• Views: 635
Sep 30th 2010, 09:16 AM
5. ### Rewriting a ODE in -t

• Replies: 7
• Views: 540
Sep 30th 2010, 08:27 AM
6. ### Find 1-parameter family of solutions

• Replies: 0
• Views: 678
Sep 29th 2010, 09:29 PM
7. ### Solving this First-Order ODE

• Replies: 4
• Views: 693
Sep 29th 2010, 03:02 PM
8. ### Exact Equation, integrating factor

• Replies: 3
• Views: 835
Sep 29th 2010, 12:56 PM
9. ### Differential Equations Intergating Factors

• Replies: 4
• Views: 430
Sep 29th 2010, 05:09 AM
10. ### Fourier Series, just a quick question

• Replies: 3
• Views: 473
Sep 28th 2010, 03:44 AM
11. ### Another DE problem

• Replies: 1
• Views: 1,817
Sep 27th 2010, 06:40 AM
12. ### Elimination of arbitrary constants

• Replies: 8
• Views: 2,856
Sep 27th 2010, 06:06 AM
13. ### Rotation of spiralling solution associate with complex eigenvalue of dynamical system

• Replies: 1
• Views: 570
Sep 27th 2010, 04:30 AM
14. ### IBVP with a nonzero BCs

• Replies: 1
• Views: 492
Sep 26th 2010, 05:23 AM
15. ### Non-Homgenous Differential Equations

• Replies: 3
• Views: 377
Sep 26th 2010, 04:05 AM
16. ### Determine orbital period

• Replies: 2
• Views: 886
Sep 26th 2010, 01:21 AM
17. ### Finding how much chemical is left over

• Replies: 1
• Views: 502
Sep 25th 2010, 02:16 AM
18. ### solution approach ?? as t approaches infinity

• Replies: 2
• Views: 345
Sep 24th 2010, 08:16 PM
19. ### 1st order non-homogeneous - solve by substitution?

• Replies: 3
• Views: 568
Sep 24th 2010, 06:41 PM
20. ### [SOLVED] Solve the Bernoulli equation.

• Replies: 9
• Views: 764
Sep 24th 2010, 02:58 PM
21. ### Heat Equation with Neumann Boundary conditions

• Replies: 0
• Views: 2,622
Sep 24th 2010, 01:40 PM
22. ### 1st Order DE

• Replies: 2
• Views: 499
Sep 24th 2010, 05:41 AM
23. ### Show that the solution is of exponential order

• Replies: 0
• Views: 627
Sep 24th 2010, 02:14 AM
24. ### help solving differential equation

• Replies: 3
• Views: 659
Sep 23rd 2010, 06:56 AM
25. ### Partial Differential Equations Problems

• Replies: 5
• Views: 659
Sep 22nd 2010, 04:22 PM
26. ### A PDE transformation

• Replies: 5
• Views: 527
Sep 22nd 2010, 04:19 PM
27. ### Second Order ODE: Exact Equations

• Replies: 2
• Views: 772
Sep 22nd 2010, 03:17 PM
28. ### Tough ODE problem

• Replies: 12
• Views: 705
Sep 22nd 2010, 03:02 PM

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### orthogonal trajectories of exponential function

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