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

Graduate What kind of model should I use to express temperature change in my experiment?

  • TSN79
  • · Replies 1 ·
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1

Graduate Limit Cycle Analysis: Uncovering the Solutions of DEs

  • sharmeen
  • · Replies 1 ·
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1

Graduate Variable Seperable Solutions in PDEs

  • TZW85
  • · Replies 2 ·
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2

Undergrad Solving 4 Differential Equations - Tips for Exam

  • Bimbar
  • · Replies 6 ·
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6

Graduate Solving 2 Equations with ODE and Diff

  • TSN79
  • · Replies 1 ·
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1

Graduate Dirac Delta Function: Scaling and Shifting

  • math&science
  • · Replies 1 ·
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1

Graduate Calculating Log & Tan Terms in Asymptotic Expansion

  • Clausius2
  • · Replies 2 ·
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2

Graduate What Is the Dirac Delta Function and Its Significance in Science?

  • Cincinnatus
  • · Replies 8 ·
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8

Graduate A strange, but very simple, differential equation

  • Aleph-0
  • · Replies 11 ·
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11

Uncovering the Mystery of Percentage Labeling on Chocolate Bars

  • Semo727
  • · Replies 23 ·
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23

Undergrad Showing a diff. eq. has no solutions

  • es
  • · Replies 4 ·
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4

Graduate PDE: If u is a solution to a certain bound problem, question about laplacian u

  • calvino
  • · Replies 3 ·
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3

Graduate Is the heat equation well posed?

  • 'AQF
  • · Replies 8 ·
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8

Graduate Can the Geometry of Coefficient Parabolas Reveal ODE Solution Behavior?

  • saltydog
  • · Replies 0 ·
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0

Graduate Fredholm Integral of Second Kind, Eigenvalues

  • beautiful1
  • · Replies 9 ·
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9

Graduate Inverse Fourier Transform of Bessel Functions

  • jdstokes
  • · Replies 2 ·
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2

Undergrad Looking for integrations for dummies

  • hexa
  • · Replies 3 ·
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3

Graduate Asymptotic Matching for Fluid Mechanics: Arildno Refs

  • Clausius2
  • · Replies 4 ·
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4

Undergrad Why y=e^mx is taken as trial soln ?

  • ironcross77
  • · Replies 9 ·
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9

Undergrad Integrating Factors: Spotting D.E. Need for Factor

  • asdf1
  • · Replies 6 ·
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6

Graduate Linear dependence of bessel equation

  • asdf1
  • · Replies 2 ·
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2

Graduate Why Does J(-n)(x) Obey the Parity Rule?

  • asdf1
  • · Replies 2 ·
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2

Graduate How Does the Hamilton-Jacobi Equation Reveal Solutions Depending on Potential V?

  • eljose
  • · Replies 6 ·
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6

Graduate Partial Differential equation problem

  • eljose
  • · Replies 1 ·
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1

Undergrad Cauchy-Euler Equations: Real-Life Applications & Examples

  • LG
  • · Replies 5 ·
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5

Undergrad PDE's: examples I can do, real equations No.

  • crepincdotcom
  • · Replies 8 ·
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8

Graduate How to Quickly Converge to a Limit Cycle in Higher Order Systems?

  • bor0000
  • · Replies 10 ·
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10

Undergrad Legendre Polynomial: Understanding the Basics

  • asdf1
  • · Replies 4 ·
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4

Graduate Will Any Light Ray Striking a Slope Segment Reflect Through Point (0,k)?

  • bomba923
  • · Replies 1 ·
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1

Graduate Laplace Transform and complex contours

  • saltydog
  • · Replies 25 ·
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25

Graduate Fractional Differential Equations

  • polyb
  • · Replies 2 ·
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2

Undergrad H value in runge kutta method 2nd order

  • Struggling
  • · Replies 1 ·
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1

Undergrad Table of differential equations? Online?

  • pellman
  • · Replies 2 ·
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2

Undergrad Solving Differential Equations with Simple Taylor Series Method

  • Pseudo Statistic
  • · Replies 4 ·
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4

Graduate Understanding Non-Linear PDEs: Causes and Implications

  • robousy
  • · Replies 3 ·
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3

Graduate Laplace's Eqn and Cauchy's Integral Formula

  • Euclid
  • · Replies 1 ·
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1

Graduate Understanding Differential Operators and their Relationship to O.D.E. Equations

  • asdf1
  • · Replies 7 ·
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7

Undergrad Finding a Basis for O.D.Es with Same Roots

  • asdf1
  • · Replies 8 ·
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8

Graduate General solution to the euler-cauchy equation

  • asdf1
  • · Replies 2 ·
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2

Undergrad A question in coupled differential equation

  • uob_student
  • · Replies 17 ·
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17

Undergrad How Do I Solve This Interesting But Challenging ODE?

  • gvk
  • · Replies 2 ·
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2

Graduate Green Functions: Solving Inhomog. ODE's with Ease

  • robousy
  • · Replies 4 ·
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4

Undergrad Solve Bernoulli Equation to Understanding

  • asdf1
  • · Replies 3 ·
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3

Graduate Can this PDE be solved using parametric functions?

  • saltydog
  • · Replies 5 ·
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5

Graduate Determine if a solution to a differential equation

  • JoAuSc
  • · Replies 1 ·
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1

Undergrad Identifying Types of Differential Equations: Tips for Beginners

  • shaan_aragorn
  • · Replies 1 ·
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1

Graduate How to solve a differential equation using polar coordinate substitution?

  • cefarix
  • · Replies 25 ·
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25

Graduate Yet another book recommendation request

  • Spectre5
  • · Replies 4 ·
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4

Graduate Problem with Nonunique Solutions

  • mkkrnfoo85
  • · Replies 1 ·
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1

Undergrad Differential equation book and topics

  • Manaf
  • · Replies 2 ·
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2

Graduate Can Anyone Help Identify the Formulas for These Steam Engine Diagrams?

  • audcrane
  • · Replies 10 ·
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10

Undergrad E^y + e^-y =2x or e^2y - 2xe^y + 1 = 0 equation

  • thenewbosco
  • · Replies 5 ·
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5

Undergrad Concavity of an integral function

  • gohou@econ.umd.edu
  • · Replies 1 ·
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1

Undergrad Semicircle Problem: What Does dA=R dR d(theta) Mean?

  • n05tr4d4177u5
  • · Replies 17 ·
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17

Undergrad Understanding the Relationship between y(t) and Ccos[ω(t)-σ]

  • asdf1
  • · Replies 6 ·
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6

Undergrad Prove Power Rule: Implicit Differentiation w/ Rational Exponents

  • mattxr250
  • · Replies 2 ·
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2

Graduate Lipschitz Continuity and Uniqueness

  • Kajsa_Stina
  • · Replies 1 ·
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1

Graduate Final paper submission (IJNS Special Issue):January 31, 2007

  • ISNN
  • · Replies 1 ·
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1

Graduate Stochastic differential equacions

  • datatec
  • · Replies 1 ·
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1

Undergrad How Do You Model Temperature with Fluctuating Ambient Conditions?

  • code.master
  • · Replies 1 ·
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1

Graduate Integral Transforms: Origins & Derivations

  • amcavoy
  • · Replies 5 ·
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5

Undergrad Solve Modeling Problem: Find Salt in Tank After 10 mins

  • nrm
  • · Replies 3 ·
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3

Graduate Solving Differential Equations with Riccati Method

  • yukcream
  • · Replies 6 ·
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6

Graduate Solving Differential Equations Using Series Solutions

  • yukcream
  • · Replies 11 ·
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11

Undergrad Wanting to get into nonlinear equations

  • gambit7
  • · Replies 2 ·
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2

Graduate What is the behavior of the solution at the boundary x_m?

  • yukcream
  • · Replies 7 ·
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7

Graduate Solve y'' + (At + B)y' + (Ct + D)y = 0: Strategies

  • Lyuokdea
  • · Replies 9 ·
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9

Graduate How Do I Solve A*(Uxx+Uyy)-B(x)*Ux=0 in Mathematica?

  • JG
  • · Replies 2 ·
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2

Graduate Reducing u(t)+Int(0->t) to Differential Equation

  • yukcream
  • · Replies 3 ·
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3

Undergrad Solving the Equation - p^7 + p^3 - p^2 + 1 = 0

  • heman
  • · Replies 6 ·
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6

Undergrad Solve the differential equation dy/dx=xy+y^2

  • heman
  • · Replies 10 ·
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10

Graduate Picard's Iteration: Solving dy/dx=y^2

  • heman
  • · Replies 4 ·
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4

Undergrad Understand Adam Moulton & Bashforth Methods for Numerical Analysis

  • steven187
  • · Replies 6 ·
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6

Undergrad me Split this Equation into 2 equations

  • memarf1
  • · Replies 4 ·
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4

Graduate Please help me to solve these 2 D.E

  • yukcream
  • · Replies 2 ·
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2

Undergrad Why Can't the Initial Condition Be Solved in This Initial Value Problem?

  • teknodude
  • · Replies 8 ·
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8

Undergrad Solution of this non-linear equation

  • eljose
  • · Replies 2 ·
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2

Graduate Solving a Non-Exact O.D.E. with Coordinate Axis Shift

  • asdf1
  • · Replies 30 ·
2
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30

Undergrad What is the effect of step functions on slope changes?

  • EvLer
  • · Replies 9 ·
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9

Undergrad Why is 'u' gone in equation 1?

  • asdf1
  • · Replies 4 ·
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4

Graduate Solve RK4 in C++ for Sekhar Mass White Dwarf Star

  • memarf1
  • · Replies 2 ·
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2

Undergrad How Do You Solve (2x-y+1)dx+(x+y)dy=0 Using a Linear Transformation?

  • asdf1
  • · Replies 31 ·
2
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31

Graduate Hints for Solving a System of Nonlinear Trigonometric Equations

  • mikeley
  • · Replies 4 ·
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4

Undergrad Why Are There Different Methods for Solving Differential Equations?

  • LENIN
  • · Replies 4 ·
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4

Undergrad Graphing Phase & Trajectory Solutions: A Simple Guide

  • physicsss
  • · Replies 8 ·
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8

Undergrad Solving a Second Order Differential Equation: Help Needed

  • EvLer
  • · Replies 6 ·
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6

Undergrad Are the Functions y1=3t and y2=|t| Linearly Independent or Dependent?

  • physicsss
  • · Replies 7 ·
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7

Graduate The Ratio of Velocities at Perigee and Apogee Proof

  • thursday
  • · Replies 1 ·
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1

Undergrad F(x)=sin x, centered at x=pi/2 Question

  • linux666
  • · Replies 8 ·
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8

Graduate .Solving the Exact Equation P(x)y"+Q(x)y'+R(x)y=0

  • physicsss
  • · Replies 6 ·
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6

Graduate How Are a(x), b(x), and c(x) Related to G(x,s) in Green's Function Problems?

  • eljose
  • · Replies 2 ·
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2

Graduate Change of variable dif equation problem

  • spoon
  • · Replies 12 ·
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12

Graduate Another change of variable problem

  • spoon
  • · Replies 4 ·
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4

Graduate Solution to general elliptic equation

  • saltydog
  • · Replies 10 ·
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10

Graduate Nonnlinear Differential Equation problem

  • kank_39
  • · Replies 10 ·
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10

Graduate Coupled first order differential equations

  • Rafique Mir
  • · Replies 5 ·
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5

Undergrad Is differentiel equation needed ?

  • Purgum
  • · Replies 6 ·
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6

Undergrad Is it useful to use patient data for mathematical formulation of tumor growth?

  • Purgum
  • · Replies 4 ·
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4

Graduate How Do You Solve a Complex IVP with Sinusoidal and Polynomial Terms?

  • cronxeh
  • · Replies 5 ·
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5

Graduate Solve Laplace Equation in Oblate/Prolate Spheroidal Coordinates

  • Aamodt
  • · Replies 3 ·
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3