Differential Equations Forum

Join in expert discussion on differential equation topics like ODE and PDE. Differential equations are an equation involving derivatives of a function or functions.

Threads

High School What are the equations of motion for uniform and accelerated motion?

  • Fritz
  • · Replies 16 ·
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16

Undergrad Solve Exact Equation: x dy-(2xe^x-y+6x^2) dx = 0

  • misogynisticfeminist
  • · Replies 4 ·
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4

Graduate Solve X'+2X'+(\lambda-\alpha)X=0 | Chris Struggling

  • Chris_K
  • · Replies 3 ·
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3

Graduate Need some help with nonlinear integration

  • mattm
  • · Replies 3 ·
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3

Undergrad Solving by seperation of variables.

  • misogynisticfeminist
  • · Replies 4 ·
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4

Graduate Integrating e^x/x: Solving a Differential Equations Exam | Exam Help

  • DrKareem
  • · Replies 10 ·
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10

Undergrad What is the Meaning of the Differential?

  • e(ho0n3
  • · Replies 5 ·
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5

Undergrad Torricelli's Theorem: Flow Rate from Containers

  • rattis
  • · Replies 2 ·
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2

Undergrad Nonlinear coupled differential equation

  • chap_japan
  • · Replies 2 ·
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2

Graduate Solve f(x) = (ax+b)/(x-c): Determine a,b,c

  • needhelpperson
  • · Replies 3 ·
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3

Graduate Solutions of D.E - Bessel Function

  • irony of truth
  • · Replies 2 ·
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2

Graduate Laplace transform of dirac delta function

  • Kambiz_Veshgini
  • · Replies 1 ·
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1

Graduate Solving 2nd Order ODE: r\ddot\theta-g\sin\theta=0

  • NeutronStar
  • · Replies 8 ·
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8

Graduate Solving a Tricky Differential Equation Problem with Anton

  • Hyperreality
  • · Replies 4 ·
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4

Graduate Reformulating Integrals as ODE Problems

  • JohanL
  • · Replies 11 ·
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11

Graduate Ok, need a little help in a couple of areas (2nd order w/forcing terms)

  • amb123
  • · Replies 6 ·
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6

Undergrad Solve Integration Problem: ∫x^3/(x^2+1)^(3/2) dx

  • tmwong
  • · Replies 4 ·
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4

Graduate Need help with nonlinear 2nd order DE

  • j_reez
  • · Replies 8 ·
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8

Undergrad Crazy optimization/Lagrange questino

  • daBish
  • · Replies 2 ·
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2

Graduate System of DEs: Linear or Nonlinear? Competitive or Cooperative?

  • mathlete
  • · Replies 3 ·
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3

Graduate Quick Harmonic Motion problem (got most of it solved)

  • Kelvie
  • · Replies 2 ·
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2

Undergrad How do you find the general solution of differential equations?

  • Fritz
  • · Replies 26 ·
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26

Undergrad Help with Initial Value Problems

  • vpathak
  • · Replies 2 ·
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2

Undergrad Good textbook for Ordinary Differential Equations?

  • Maxwell
  • · Replies 2 ·
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2

Graduate Numerical resolution of 2nd order non-linear differential equation

  • zeus_the_almighty
  • · Replies 1 ·
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1

Undergrad Solve this differential equation

  • Fritz
  • · Replies 14 ·
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14

High School Im trying to find the two values of X

  • FAQ
  • · Replies 6 ·
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6

Graduate Is Pressure Constant Along the Horizontal Axis in a Fluid Element?

  • Fritz
  • · Replies 5 ·
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5

Undergrad What Can You Study in the Theory of Ordinary Differential Equations?

  • theFuture
  • · Replies 4 ·
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4

Undergrad How to Solve Related Rates Problems Involving Water Leaks and Pumping Rates?

  • catch.yossarian
  • · Replies 2 ·
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2

Graduate What Are the Phase Lines and Equilibrium Points for These Differential Systems?

  • MrBioMedic
  • · Replies 2 ·
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2

Undergrad Runge Kutta 4: problems in application in computer simulation

  • asmatic
  • · Replies 2 ·
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2

Undergrad Find Derivative of y=2^x Using Definition

  • hackensack
  • · Replies 8 ·
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8

Graduate Multiphysics PDE solvers with solution dependent domains

  • PerennialII
  • · Replies 2 ·
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2

Undergrad Max/Min Triangle Area in Calc BC: Find Dimensions of Isosceles Triangle

  • Albert Einstein
  • · Replies 3 ·
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3

Undergrad Master the Finite Element Method: Top Online Resources for FEM Learning

  • Saint
  • · Replies 4 ·
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4

Graduate Appropriate predator-equilibrium

  • edge
  • · Replies 3 ·
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3

Graduate Solving Polar Co-ordinate Paradox: Finding \frac {\partial r} {\partial x}

  • dirtydog
  • · Replies 6 ·
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6

Graduate Can Nonlinear Trajectories Lead to Linear Equilibrium?

  • Loren Booda
  • · Replies 19 ·
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19

Undergrad Integrate this integral from 0 to x of e^(-t^2)

  • hytuoc
  • · Replies 3 ·
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3

Graduate General Solutions of 2nd Order Linear Homogeneous Ordinary D.E.s

  • cepheid
  • · Replies 4 ·
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4

Graduate Boundary Value Problem for Electrostatic Potential in a Channel

  • MathematicalPhysics
  • · Replies 16 ·
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16

Graduate Reducing 2nd order to 1st order type question

  • Shinjo
  • · Replies 4 ·
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4

High School Applications Of differential Equations In Physics

  • Majid
  • · Replies 5 ·
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5

Graduate How Does a Generalist Predator Impact Prey Population Dynamics?

  • edge
  • · Replies 2 ·
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2

Graduate Wave eqn with initial functions odd

  • forget_f1
  • · Replies 3 ·
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3

Undergrad Proof of 1D Wave Equation: Simplified Explanation

  • Phymath
  • · Replies 7 ·
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7

Undergrad Laplace Transform Integration: Tips & Solutions

  • lostinhere
  • · Replies 2 ·
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2

Undergrad Can dy/dx = a * y(x)y(x) + b be solved analytically?

  • Muzza
  • · Replies 3 ·
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3

Graduate PDEs & Shock Waves: Understanding Inviscid Burgers' Equation

  • bullet_ballet
  • · Replies 3 ·
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3

Undergrad Area & Distances of Polygon in Circle: Find An

  • fellowsk
  • · Replies 3 ·
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3

Undergrad Classifying a Diff Eq: Linear vs. Non-Linear Techniques

  • formulajoe
  • · Replies 3 ·
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3

Graduate Solve Uxx-3Uxt-4Utt=0 (hyperbolic)

  • forget_f1
  • · Replies 3 ·
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3

Undergrad This should be a simple problem to solve but im just not getting it

  • mathrocks
  • · Replies 6 ·
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6

Graduate Could use a little advice here, with a 2nd order ODE

  • MaximumTaco
  • · Replies 3 ·
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3

Graduate Green's function expansion in a set of eigenfunction

  • kristobal hunta
  • · Replies 2 ·
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2

Graduate Apparently this 2nd-order ODE has 3 solutions?

  • Farina
  • · Replies 5 ·
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5

Graduate How to use matrices to solve systems of ODEs?

  • medstudent
  • · Replies 3 ·
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3

Undergrad DE Identifying/Solving Homo/Bernoullis/Exact/etc

  • netapparition
  • · Replies 2 ·
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2

Graduate Ploting zero order Bessel function

  • ReyChiquito
  • · Replies 3 ·
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3

Graduate Is the Inverse of a Linear Homogeneous Differential Equation True?

  • quasar987
  • · Replies 4 ·
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4

Undergrad How Can I Express Wall Pressure as a Differential Equation?

  • Mathman23
  • · Replies 2 ·
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2

Graduate Solving an IVP Problem: dx/dt, x(0) & Equilibrium Points

  • Tryingtolearn
  • · Replies 3 ·
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3

Graduate Problem on Inverse Laplace with Unit Step

  • purduegrad
  • · Replies 2 ·
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2

Graduate Solution to the exact differential equation

  • fresh
  • · Replies 3 ·
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3

High School What is a Common Denominator for Multiplying Fractions?

  • skyie1
  • · Replies 4 ·
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4

Graduate Can the Navier-Stokes Equations Prove Long-Term Fluid Stability?

  • kurious
  • · Replies 13 ·
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13

Graduate Integration by Parts: A Powerful Tool in the Theory of Distributions

  • Whatupdoc
  • · Replies 26 ·
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26

Graduate Reducing to First-Order Equation

  • Banana
  • · Replies 2 ·
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2

Undergrad What is the solution for the homogeneous equation (x^2 + y^2)dx + (2xy)dy = 0?

  • amb123
  • · Replies 8 ·
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8

Undergrad Is there an easy trick to this (getting into form)

  • amb123
  • · Replies 8 ·
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8

Graduate Developing equation for specific wave

  • infraray
  • · Replies 2 ·
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2

Undergrad Is Homogeneous Always Separable in First Order Differential Equations?

  • cepheid
  • · Replies 3 ·
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3

Graduate Deriving a Limit from a Differential Equation: Is It Valid?

  • StatusX
  • · Replies 9 ·
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9

Undergrad Solving the SHM Calculus Twister

  • cj
  • · Replies 4 ·
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4

Undergrad Having a hard time with 2 implicit equations

  • Braumin
  • · Replies 2 ·
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2

Undergrad Exactness Test for Differential Equations

  • JonF
  • · Replies 2 ·
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2

Undergrad Is the Rotor of This Radius Vector Correct?

  • xz5x
  • · Replies 6 ·
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6

Undergrad How does differential equation work?

  • physicskid
  • · Replies 13 ·
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13

Undergrad Integration: Choosing U-Sub vs. Parts

  • COCoNuT
  • · Replies 2 ·
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2

Undergrad How Do You Solve the Differential Equation x'=x(M-x) for x(t)?

  • AronH
  • · Replies 5 ·
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5

Graduate A challenge Question on Inverse Laplace

  • Theelectricchild
  • · Replies 3 ·
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3

Graduate What is the minimum value of f(N)?

  • dedaNoe
  • · Replies 2 ·
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2

Graduate Calculate a_0 for Fourier Coefficient | Solution

  • Oxymoron
  • · Replies 2 ·
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2

Graduate F(x)+2*f((x+2000)/(x-1))=4011-x -> f(x)=?

  • canopus
  • · Replies 11 ·
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11

Graduate Having trouble with Laplace Transform for DiffEQ

  • Theelectricchild
  • · Replies 2 ·
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2

Graduate Solving 3rd Order Dynamical Systems

  • abercrombiems02
  • · Replies 2 ·
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2

Graduate 3rd order non-linear differential eqn

  • Hitman
  • · Replies 2 ·
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2

Undergrad Modelling Drug Dosages to Reach Target Level

  • Canuck156
  • · Replies 2 ·
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2

Graduate Solution to 2nd O.D.E. using power seris

  • Jayzar_1
  • · Replies 2 ·
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2

Undergrad How Can a Secondary School Student Solve Schrödinger's Equation?

  • misogynisticfeminist
  • · Replies 9 ·
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9

Graduate Finding Laplace Transform Limits for Periodic Functions

  • orange22
  • · Replies 3 ·
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3

Graduate How Can TDMA and Gauss-Seidel Line Relaxation Solve a Complex PDE in MATLAB?

  • tetirichie
  • · Replies 2 ·
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2

Undergrad Proof Validity: |\frac {dy}{dx}| +|y| + 1 = 0

  • zeronem
  • · Replies 2 ·
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2

Graduate Heat equation in a sphere surface

  • Clausius2
  • · Replies 3 ·
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3

Undergrad Good PDE Books: Get Help & Exercises from Fellows

  • Looker
  • · Replies 4 ·
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4

Graduate What is the solution for the Continuity Equation at r=0?

  • Clausius2
  • · Replies 2 ·
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2

Graduate Deceptively Difficult Physics Integration Problem (Restorative Forces)?

  • cj
  • · Replies 7 ·
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7

Graduate Inverse Laplace Transform Control Systems

  • Adder_Noir
  • · Replies 7 ·
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7

Graduate How Do You Solve for Coefficients in a Power Series for a 2nd Order DE?

  • bhajee
  • · Replies 2 ·
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2