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 Can someone walk me through solving a PDE numerically?
- cmkluza
- · Replies 12 ·
Graduate Whittaker's solution and separable variables
- matt_crouch
- · Replies 4 ·
Graduate Why does the Green's function method work for PDEs?
- alivedude
- · Replies 2 ·
Proving $\int_{\mathbb{R}^3}\Delta G(x,y)dx=1$ with Gauss's Theorem
- evinda
- · Replies 1 ·
Graduate Characteristic equation for recurrence equation
- Bruno Tolentino
- · Replies 3 ·
Put the 2D nonlinear system into Polar Coordinates
- Krish23
- · Replies 1 ·
Undergrad Differentiating an exponential with a complex exponent
- Zacarias Nason
- · Replies 7 ·
Graduate How to graph the duffing frequency response
- Takuza
- · Replies 1 ·
Graduate Equations with dependent variable missing
- Joseph1739
- · Replies 3 ·
Graduate Solution for f(n) in recurrence equation
- Bruno Tolentino
- · Replies 1 ·
Graduate Is There a Rigorous Method to Regularize Green's Functions in Coordinate Space?
- Einj
- · Replies 1 ·
Graduate Separation of variables with boundary conditions for X_n
- theone
- · Replies 4 ·
Graduate A question on Laplace transform
- Debdut
- · Replies 3 ·
Graduate Solve Difference Equation: ΔP = e^P
- Cyrus
- · Replies 9 ·
Undergrad Why is differential equation equal to sum of partials?
- cmkluza
- · Replies 6 ·
Undergrad Phase portrait for dy/dx = ky - w
- David Donald
- · Replies 2 ·
Undergrad Attempting to model traffic flow after front car decelerates
- cmkluza
- · Replies 6 ·
Graduate When do mixed and second derivative PDEs determine surfaces in R^3?
- lavinia
- · Replies 2 ·
Graduate Why does expanding e^(it) give imaginary terms in ODE solution?
- sa1988
- · Replies 9 ·
Graduate What are the limitations of using electrical circuits to solve PDEs?
- Domenico94
- · Replies 9 ·
Graduate Can two different implicit solutions define the same curve for an ODE?
- ArenasField
- · Replies 1 ·
Undergrad Classifying second-order Partial differential equations
- hellomrrobot
- · Replies 3 ·
Graduate Vertical diffusion in EPIC GCM
- rc_nmt
- · Replies 10 ·
Graduate When can I rename constants in differential equations?
- Joseph1739
- · Replies 2 ·
Initial vertical velocity (vertical motion)
- averyjedwards2
- · Replies 1 ·
Undergrad Why does multiplying dy/dt by dt give dy using the chain rule?
- Joseph1739
- · Replies 8 ·
Creating a 4D System with a Specific Solution: How Can It Be Done?
- sawdee
- · Replies 4 ·
Graduate Wronskian and two solutions being independent
- bubblewrap
- · Replies 9 ·
Graduate Why does differentiating f(x,y,z,a,b)=0 give fx+pfz=0?
- ahmed markhoos
- · Replies 6 ·
Graduate Proving total variation diminishing for a half step scheme
- martizzle
- · Replies 3 ·
Undergrad Differentiatial equation
- TimeRip496
- · Replies 6 ·
Solving Second Order ODE: True or False?
- Guest2
- · Replies 2 ·
Solving Homogeneous ODE: $\displaystyle x(y-3x)\frac{dy}{dx}=2y^2-9xy+8x^2$
- Guest2
- · Replies 1 ·
Undergrad How do you actually calculate this....?
- SansaStark
- · Replies 8 ·
Graduate Variation of parameters - i have different particular soluti
- omar yahia
- · Replies 3 ·
Solving 2e^(-x) = 3e^(0.1x) for x
- Velo
- · Replies 4 ·
Graduate Brainstorm Ideas for Project - Get Suggestions on Differential Equations
- faradayscat
- · Replies 5 ·
Graduate Special Second Order Ordinary Diff. Equation
- Andreol263
- · Replies 3 ·
Undergrad Why differential equations? When to use them?
- Pulik
- · Replies 11 ·
What is the mistake in this supposed proof?
- evinda
- · Replies 5 ·
Undergrad Equation for underdamped harmonic motion
- pinkcashmere
- · Replies 2 ·
How do we get the imaginary part?
- evinda
- · Replies 4 ·
Undergrad A solved 2nd order ODE that i don't understand its solution
- omar yahia
- · Replies 7 ·
Graduate Does Integration Scheme Choice Matter for Initial Demo of Crane Control?
- observer1
- · Replies 6 ·
Graduate Green's function in elliptic box
- Einj
- · Replies 4 ·
Graduate Solving the 3D Diffusion Equation with Fourier Spectral Techniques
- johnnyTransform
- · Replies 2 ·
Undergrad Why 2nd order differential equation has two solutions
- goodphy
- · Replies 4 ·
Graduate Why multiply trig polynomials by x in undetermined coefficients
- kostoglotov
- · Replies 1 ·
Graduate Transfer function with non zero initial conditions
- Wesker
- · Replies 1 ·
Graduate Fitting data to complicated model
- yumyumyum
- · Replies 5 ·
Graduate Numerical solution of non-linear diffusion equation
- maka89
- · Replies 11 ·
How do I apply the Frobenius method to solve Hermite's ODE?
- ognik
- · Replies 1 ·
Graduate Axial/Longitudinal Vibrations in beams
- Runei
- · Replies 20 ·
Graduate Are solutions from different values of s in the Frobenius method independent or combined?
- TroyElliott
- · Replies 2 ·
How do we deduce that there is such a point?
- evinda
- · Replies 2 ·
Undergrad What are differential equations good for?
- INTP_ty
- · Replies 2 ·
How do you solve the Euler ODE $x^2y'' + xy' - n^2y = 0$ using $y=x^p$?
- ognik
- · Replies 1 ·
Find Ansatz for this ODE (3.5.15)
- ognik
- · Replies 2 ·
Particular solution for y'' + 3y' - 4y = sin ωt
- ognik
- · Replies 3 ·
Graduate Bungee jump -> differential equation -> simulink simulation
- Wesker
- · Replies 2 ·
ODE y'' + 4y' - 12y = 0 with initial conditions y(0)=1, y(1)=2
- ognik
- · Replies 2 ·
Second-order ODE with initial conditions y'' + 2y' + 3y = 0
- ognik
- · Replies 7 ·
Finding the weight function for Laguerre's equation
- ognik
- · Replies 5 ·
Graduate Do these two partial derivatives equal each other?
- thegirl
- · Replies 4 ·
Graduate Taylor expansion with multi variables
- bubblewrap
- · Replies 5 ·
Solving a Difficult DE with TI-NSPIRE: Is it True?
- karush
- · Replies 2 ·
Undergrad Why does the Wronskian vanish at x = 0 for linearly independent solutions?
- kostoglotov
- · Replies 1 ·
Graduate Soln space basis for all constant coeff homo linear DE's?
- kostoglotov
- · Replies 1 ·
Solve for $a^2$ in $u_{xx} = u_{tt}$ using $u_1$ and $u_2$
- karush
- · Replies 5 ·
Undergrad How do differential equations relate to traffic flow?
- cmkluza
- · Replies 5 ·
Graduate Question on proper technique for solving this equation
- redtree
- · Replies 2 ·
Undergrad Solving dy/dx = e^-2y by separable integration
- santeria13
- · Replies 4 ·
Differential equation y/(x^2+y^2)
- Nikolas7
- · Replies 4 ·
Solve the differential equation
- Nikolas7
- · Replies 6 ·
Verifying Solution: U(x, y) = cos(x) cosh(y) for PDE U_xx + U_yy = 0
- karush
- · Replies 5 ·
Graduate Why exponential solutions for second order linear differential equations
- anachin6000
- · Replies 5 ·
-b.1.3.21-24 Order and linear or nonlinear
- karush
- · Replies 6 ·
Undergrad Understanding some unfamiliar words
- mr.tea
- · Replies 6 ·
Graduate Why Must B Approach Zero in Cauchy-Euler ODE Solutions at x=0?
- Andreol263
- · Replies 4 ·
Graduate A Holder space is a Banach space
- Domenico94
- · Replies 12 ·
Converting complex exponential solutions to real trig form
- ognik
- · Replies 4 ·
What are the different types and stabilities of critical points?
- ineedhelpnow
- · Replies 3 ·
Higher power constant coefficiants ODEs
- ognik
- · Replies 2 ·
Solving y'=Ay for a 2×2 matrix system
- ineedhelpnow
- · Replies 7 ·
Finding particular solutions with undetermined coefficients
- ineedhelpnow
- · Replies 9 ·
How to Find a General Solution Using Variation of Parameters?
- ineedhelpnow
- · Replies 2 ·
Undergrad Can All Differential Equations Be Separated?
- whatisreality
- · Replies 10 ·
Approximating Equations for Unknowns: How to Justify the Form of $U_0$?
- evinda
- · Replies 5 ·
Solutions to Linear Diff. Eq. of 1st Order in a Ring?
- mathmari
- · Replies 3 ·
Insights Solving Nonhomogeneous Linear ODEs using Annihilators - Comments
- Mark44
- · Replies 5 ·
Undergrad Linear First-Order Differential Equation
- DiamondV
- · Replies 3 ·
Graduate Solving a PDE w/ given boundary and initial conditions
- TheCanadian
- · Replies 5 ·
Graduate Failure to see the validity of an approximation to DiffEq.
- davidbenari
- · Replies 3 ·
Graduate How Does Laplace Transform Solve the Harmonic Motion Differential Equation?
- Jim wah
- · Replies 2 ·
Reducing a system of differential equations to a single equation
- mathmari
- · Replies 5 ·
Are Unique Solutions Possible for Homogeneous Equations?
- mathmari
- · Replies 1 ·
Graduate Finite-element solution of Sturm-Liouville problem
- leon_avery
- · Replies 2 ·
Solving a PDE using separation of variables
- arrow27
- · Replies 1 ·
Undergrad Finding s1 from dominant closed loop poles
- shayaan_musta
- · Replies 4 ·
Graduate Find the approximate linear ODE system
- NiallBucks
- · Replies 6 ·