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Forum: Differential Equations

Ordinary and Partial Differential Equations, Linear and Nonlinear; also Integral and Integro-Differential Equations

  1. Sticky Thread Sticky Threads

  2. Sticky Thread Bessel Functions Cheat Sheet

    Started by Ackbach, September 11th, 2015 10:13
    • Replies: 0
    • Views: 1,159
    September 11th, 2015, 10:13 Go to last post
  3. Sticky Thread Stürm-Liouville Problem Cheat Sheet

    Started by Ackbach, September 4th, 2015 10:10
    • Replies: 0
    • Views: 1,009
    September 4th, 2015, 10:10 Go to last post
  4. Sticky Thread Status of DE Tutorial

    Started by Chris L T521, December 26th, 2012 03:16
    • Replies: 4
    • Views: 2,185
    July 10th, 2013, 04:41 Go to last post
  1. Normal Thread Normal Threads

  2. Linear differential equation

    Started by mahmoud shaaban, March 19th, 2017 14:12
    • Replies: 1
    • Views: 374
    March 19th, 2017, 16:41 Go to last post
  3. Asymptotic

    Started by meenums34, February 27th, 2017 05:05
    dominance, find, method, proceed, realised
    • Replies: 1
    • Views: 414
    March 4th, 2017, 09:36 Go to last post
  4. [SOLVED] A tank contains 200 gal of fresh water

    Started by karush, February 23rd, 2017 13:19
    fertilizer, gal, gal/min, maximum, tank
    • Replies: 7
    • Views: 712
    February 23rd, 2017, 23:23 Go to last post
  5. Self-similarity of nonlinear PDE

    Started by Raisa, February 18th, 2017 18:57
    • Replies: 0
    • Views: 249
    February 18th, 2017, 18:57 Go to last post
  6. [SOLVED] 242.7x.13 Solve the differential equation

    Started by karush, February 2nd, 2017 14:54
    2 Pages
    1 2
    $textitjust, 242.7x.13, differential, direction, e^y
    • Replies: 11
    • Views: 855
    February 2nd, 2017, 20:19 Go to last post
  7. Show that the function is the solution

    Started by evinda, January 15th, 2017 18:41
    • Replies: 5
    • Views: 600
    January 20th, 2017, 20:05 Go to last post
  8. Uniqueness of solution

    Started by evinda, October 9th, 2016 11:37
    2 Pages
    1 2
    delta, int_partialb_r, leq, phix_0right|=left|, xi|phixi-phix_0|
    • Replies: 17
    • Views: 1,607
    January 19th, 2017, 17:03 Go to last post
  9. Questions about proof of theorem

    Started by evinda, January 11th, 2017 15:51
    $omega$, $overlineomega, phi$, setminus, x_0
    • Replies: 1
    • Views: 305
    January 15th, 2017, 07:57 Go to last post
  10. How do we get the relations?

    Started by evinda, December 14th, 2016 16:12
    $gx$, dphi=frac12, int_0^2, nabla_xih, sinphi
    • Replies: 8
    • Views: 880
    December 20th, 2016, 10:45 Go to last post
  11. 2 Differential Equations by Substitution

    Started by abhay, December 14th, 2016 02:51
    • Replies: 5
    • Views: 682
    December 16th, 2016, 00:33 Go to last post
  12. [SOLVED] method of integrating factor

    Started by karush, December 10th, 2016 02:48
    displaystyle, equation$, factor, integrating, method
    • Replies: 2
    • Views: 308
    December 10th, 2016, 03:24 Go to last post
  13. Application of chain rule

    Started by evinda, December 2nd, 2016 05:26
    2 Pages
    1 2
    +infty, derivative, mathbbr^n$, rule, times
    • Replies: 12
    • Views: 1,061
    December 4th, 2016, 08:28 Go to last post
  14. Show that the function is a solution of the equation

    Started by evinda, December 2nd, 2016 19:55
    cdots, dots+, i=1, v_2, x_i
    • Replies: 8
    • Views: 653
    December 3rd, 2016, 18:56 Go to last post
  15. Differential equation

    Started by wheepep, November 26th, 2016 13:44
    constant, differential equations, equation, find, respect
    • Replies: 2
    • Views: 390
    November 26th, 2016, 16:48 Go to last post
  16. The functions is equal to zero for x=0

    Started by evinda, November 25th, 2016 05:32
    gammat, mathbbr, problem, text, x=phix
    • Replies: 2
    • Views: 350
    November 25th, 2016, 18:26 Go to last post
  17. How do we apply the proposition?

    Started by evinda, November 16th, 2016 05:44
    $omega$, ball, omega, subharmonic, text
    • Replies: 4
    • Views: 587
    November 23rd, 2016, 19:06 Go to last post
  18. Show inequality

    Started by evinda, November 17th, 2016 09:26
    2 Pages
    1 2
    epsilon, e^gamma, leq, show, x_1
    • Replies: 18
    • Views: 1,313
    November 22nd, 2016, 14:32 Go to last post
  19. How can we improve the estimate?

    Started by evinda, November 20th, 2016 15:50
    3 Pages
    1 2 3
    • Replies: 21
    • Views: 1,503
    November 21st, 2016, 16:03 Go to last post
  20. Can we just use a part of the boundary?

    Started by evinda, November 16th, 2016 16:33
    3 Pages
    1 2 3
    $omega$, $u$, $u=0$, leq, maximum
    • Replies: 27
    • Views: 1,439
    November 20th, 2016, 10:29 Go to last post
  21. Maximum principle for subharmonic functions

    Started by evinda, November 10th, 2016 16:14
    2 Pages
    1 2
    $omega$, $v$, constant, harmonic, maximum
    • Replies: 16
    • Views: 1,160
    November 16th, 2016, 14:53 Go to last post
  22. Differential equations stability

    Started by Harambe, November 9th, 2016 10:03
    $|xt-p|, equilibrium, leq, stability, stable
    • Replies: 2
    • Views: 417
    November 9th, 2016, 12:01 Go to last post
  23. Show that the function equals to the zero function

    Started by evinda, October 22nd, 2016 09:34
    3 Pages
    1 2 3
    $delta, $omega$, continuous, show, subset
    • Replies: 21
    • Views: 1,590
    October 30th, 2016, 13:40 Go to last post
  24. Show that limit is equal to zero

    Started by evinda, October 26th, 2016 15:16
    dass, fracpartialuxipartialv_xi, geq, int_partialb_epsilon, lim_epsilon
    • Replies: 6
    • Views: 708
    October 30th, 2016, 06:26 Go to last post
  25. How to compute the integral

    Started by evinda, October 12th, 2016 13:16
    $l=, compute, wave, x^2+y^2, integral
    • Replies: 9
    • Views: 899
    October 22nd, 2016, 17:17 Go to last post
  26. Find the function at the point (0,0)

    Started by evinda, October 18th, 2016 16:35
    3 Pages
    1 2 3
    delta, function, int_x^2+y^2=1, phi, theorem
    • Replies: 20
    • Views: 1,435
    October 21st, 2016, 05:20 Go to last post
  27. Exact ODE?

    Started by NotaMathPerson, September 9th, 2016 08:56
    $$y-2x^2ydx, 0$$, equation, ode, xdy
    • Replies: 4
    • Views: 624
    September 9th, 2016, 09:50 Go to last post
  28. Non-linear 2nd Order ODE

    Started by metstandard16, May 8th, 2016 10:45
    2nd, equation, ode, order, points
    • Replies: 3
    • Views: 638
    September 3rd, 2016, 16:51 Go to last post
  29. Differential equation

    Started by rozin, September 3rd, 2016 16:09
    differential, equation, family, normals, y=x^2
    • Replies: 1
    • Views: 332
    September 3rd, 2016, 16:26 Go to last post
  30. differentiation equation

    Started by markosheehan, June 11th, 2016 07:16
    acceleration, dv/dt=, dv=25+v²ds, s=.01, speed
    • Replies: 2
    • Views: 542
    July 20th, 2016, 12:26 Go to last post
  31. Help with another separable equation

    Started by jahrens, July 6th, 2016 00:56
    good, idea, ideas, isolate, mistakes
    • Replies: 4
    • Views: 658
    July 20th, 2016, 12:16 Go to last post

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Top 148 Thread Starters For "Differential Equations"

RankUser NamePercentage Of TotalThreadsMost Recent Thread
1dwsmith12.690What is meant by find the time...
2evinda9.064Find sets
3mathmari8.661Limit of the solution - Which ...
4find_the_fun5.942finding interval where second ...
5shamieh3.827Use series methods to solve [2...
6Markov3.525First order PDE
7karush2.921t1.13 solve the initial value ...
7ineedhelpnow2.921Critical Points, Stability
8onie mti2.719solving a cauchy problem
8ognik2.719Another Frobenius method ODE
9alane19942.417Population Dynamics... again
9kalish2.417Solving a system of an arbitra...
10nacho2.014Chebyshev Expansion (I need he...
11grandy1.813Boundary integral method to so...
12simo1.712looking at a solitary initial ...
13bergausstein1.511Elimination of constants
14Poirot1.39Fourier transform
15Julio1.18Laplace equation and Median Va...
16Alexmahone0.86Infinitely many solutions
16Cbarker10.86Bernoulli Equation Checking th...
17shorty0.75Damped Free Forced Vibration
17Cadbury0.75Solution of the equation
17brunette150.75Parametric representation of a...
18Fantini0.64Stable and unstable manifolds ...
18oasi0.64solving ODE with series
18ssh0.64Hypergeometric equation
18suvadip0.64differential eq of first order...
18LLand3140.64Need help setting up Different...
18nathancurtis110.64Finding a value for a y(0) = ...
18stripedcat0.64Bernoulli to Linear First Orde...
19Chris L T5210.43Status of DE Tutorial
19Alan0.43Problem 13 from section 16.1 o...
19rsoy0.43Show whether the given ODE is ...
19ZiniaDuttaGupta0.43Stability, phase portrait, bif...
19Vishak0.43Second order inhomogeneous dif...
19Guest0.43System of differential equatio...
19frank12340.43Help on a 2nd Order Linear Dif...
19dansingh0.43reduction of linear or non lin...
19arrow270.43Fourier Transform
19DrWahoo0.43General DE questions and help
20Ackbach0.32Bessel Functions Cheat Sheet
20bkarpuz0.32Solution of the PDE?
20ifeg0.32what is the difference between...
20MacLaddy0.32Inflection Point of the Thresh...
20Sudharaka0.32Solving a Riccati Differential...
20Jason0.32ODE system. Limit cycle; Hopf ...
20madflame9910.32System of DEs
20Chipset36000.32ODE PVI problem.
20Amer0.32How to solve this Differential...
20Hurry0.32D'Lambert problem
20crevoise0.32Bernoulli / Riccati Equation
20topsquark0.32Simple pendulum, ref: POTW 156
20skatenerd0.32derivative of bessel function ...
20hatguy0.32Solving Nonlinear ODEs I
20wmccunes0.32Integrating factor, initial va...
20Carla19850.32Method of Characteristics
20paulmdrdo0.32Differential Equation of Unkno...
20Kris0.32Help rearranging a linear firs...
20LATEBLOOMER0.32Differential equation populati...
20shen070.32PDE Solving Continuity Equatio...
20dearcomp0.32D.E with Physics Included
20Pranav0.32Solving a first-order differen...
20LAK0.32Separation of Variables
20cheatmenot0.32Obtaining Differential Equatio...
20rayne0.32general solution to 2nd order....
20Nikolas70.32Differential equation y/(x^2+y...
20jmorgan0.32Superposition
20markosheehan0.32differentiation equation: equa...
20jahrens0.32Help with another separable eq...
20kayella190.32Any one who can solve this?
21Ulysses0.11Partial differential equation
21Kane0.11need help with transforming on...
21issacnewton0.11vanishing wronskian for linear...
21battleman130.11A few small questions about di...
21GreenGoblin0.11Cannot isolate y (first order ...
21MarkFL0.11Using the annihilator method t...
21nonsequitter0.11Dirichlet Problem for Laplace'...
21I like Serena0.11Interesting ODE
21charlottewill0.11Volterra-Lotka system.
21caffeinemachine0.11Book Recommendation for Ordina...
21blackthunder0.11first order pde
21themurgesh0.11Integrating Factor Question
21weber0.11Series Solution of a DE
21Usagi0.11Frobenius Method Queries
21rishadjb0.11Linear ODE for a fundamental s...
21azuralshadow0.11Understanding partial solution...
21thecoop0.11Finding Critical Points of a D...
21superbread880.11Question on 1D heat equation
21U4770.11Air resistance equation
21Petrus0.11First order linear differentia...
21heaviside0.11Assistance needed for this ODE...
21ryo00710.11Nonlinear PDE
21Jerome0.11Hankel and mellin transform
21ipaper0.11A property of solution of ODE ...
21krish0.11Solving an IVP for a system of...
21ends0.11Mixing Problem?
21nuggz6190.11First Order Differential Equat...
21Bibbster0.11Second order differential help...
21shocks900.11Integrating with trigo....ODE
21emily6000.11Partial DE-separation of varia...
21ISITIEIW0.11Verify a function is a solutio...
21goku9000.11Phase Line and long term behav...
21talha0.11non-linear first order differe...
21ChemEng0.112nd order ODE (Control Systems...
21tylerbizoff0.11Heat equation with annoying so...
21zkee0.11Homogeneous Functions
21mikky05v0.11Torrcelli's law of fluids
21CWolf0.11Singular Points
21Schmidt0.11Displacement of mass spring sy...
21Aryth0.11Finding Integral Curves
21mathgirl0.11Find all solutions (integral s...
21Pascal0.11Coupled ODEs
21jakejakejake0.11Laplace Transform, Finding sol...
21Naincy0.11First order linear ODE
21danthatdude0.11Second Order Linear ODE
21Milly0.11Integration of separate variab...
21PullandTwist0.11HELP: Orthogonal Trajectories
21PeterH0.11Modelling the motion of a mete...
21Rezalt0.11Help with motions of a double ...
21marrvo0.11Find equation system for bound...
21KD17290.11Identifying the Degree of a Di...
21xichyu10.11How can the six unknown number...
21superduck13850.11Partially Decoupled System
21Ciaran0.11Changing variables DE
21kJS0.11Inverse Laplace Transform 2
21notagenuis0.11Newton's Cooling Law
21ozkan120.11What does priori estimate do i...
21tiaborrego0.11Integrating Factor
21hornekat0.11Please help me solve this diff...
21NotaMathPerson0.11Exact ODE?
21Krish230.11Put the 2D nonlinear system in...
21Joppy0.11Solutions to Bessel's equation...
21Derby0.11Damped spring differental equa...
21WelshDave0.11Turning 2nd order into 1st ord...
21Sophie0.11Laplace transform help
21metstandard160.11Non-linear 2nd Order ODE
21flanker0.11Help to find asymptotic soluti...
21mahmoud shaaban0.11Linear differential equation
21rozin0.11Differential equation
21Umar0.11Find a product solution to the...
21Harambe0.11Differential equations stabili...
21wheepep0.11Differential equation
21abhay0.112 Differential Equations by Su...
21Raisa0.11Self-similarity of nonlinear P...
21meenums340.11Asymptotic
21Roger0.11Bounded Solution For Different...
21ertagon20.11Inverse and differentation of ...
21Emjay0.11Differential equation w/ cos a...
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