Differential Equations Forum

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Join in expert discussion on differential equation topics like ODE and PDE. Differential equations are an equation involving derivatives of a function or functions.
Undergrad How do I derive a PDE for the volume flow rate of a tilting vessel?
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Undergrad Wanting to understand the linearity of wave equations
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Graduate Deriving the derivative boundary conditions from natural formulation
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MHB Differential equation - distance needed to achieve target speed
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Undergrad Does this ODE have any real solutions?
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Undergrad Find Practical Resonance Frequencies in Linear Differential Equations
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Undergrad Separation of Variables for Partial Differential Equations
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MHB 4-39 magnitude of its velocity after falling 10.0m
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MHB -a.3.2.96 Convert a 2nd order homogeneous ODE into a system of first order ODEs
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MHB -5.5 Solve the matrix equation AX=B to find x and y
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Undergrad Independent functions as solutions
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MHB -29.1 Find a general solution to the system of DE
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MHB -m30 - 2nd order linear homogeneous ODE solve using Wronskian
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Undergrad Solving a differential equation using Laplace transform
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MHB 2.3.17 Find the average acceleration for this interval.
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Undergrad Partial Derivative: Correct Formulation?
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MHB 2.62 Calculate the objects position and acceleration (using tikx for graph)
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Undergrad Homogeneous equation and orthogonality
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MHB Correctness of Ball-Dropping Problem Answer
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MHB 3.1.11 find the solution of the given initial value problem:
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MHB Can You Solve This Initial Value Problem and Determine Its Solution Interval?
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Graduate Solving the Convection-Diffusion Equation for this Pipe with a Heat Sink
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Graduate What type of function satisfy a type of growth condition?
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MHB Solve IVP 2000 #23: Y(0)=A Solution
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Graduate Preventing Oscillations w/ Coarse Calculation Increments?
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MHB 31.6 Solve the initial value problem
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MHB Comparing Methods for Initial Value Problem
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Graduate Looking for a nonlinear equation with the following property
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Graduate Can Optimal Control Be Achieved Using Direct Cost Function Calculation?
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Graduate Identifying cusp catastrophes?
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Graduate Sequence operator and transform
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Graduate Different representation of Laplacian
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Graduate Solving the Unknown in PDE: Finding u_B!
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Undergrad Green's function for the wave equation
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Graduate Defining a Flow: What's the Best Way?
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Graduate Integral transforms - convergence
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Undergrad Projective Methods For Stiff Differential Equations
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Undergrad What is the proper format for solving this ODE using an Excel add-in calculator?
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Graduate Solving Variational Equations with FreeFem++
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Graduate How does decompression affect the number of particles in a confined gas?
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Graduate Interesting differential equation
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Graduate Solving Drug Modeling: 130 micrograms of Thyroxine Needed
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Undergrad Using D'Alembert Solution to Find Values of Regions
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Undergrad Separation of Variables (PDE) for the Laplace Equation
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Graduate Proof involving some inequality
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Undergrad How bad is my maths? (numerical ODE method)
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Undergrad Verification regarding Neumann conditions at time derivative
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Graduate Can we apply dynamics/system/chaos theory to the world?
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Graduate Understanding Transcendental Equations in Multicompartment Systems
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Undergrad Energy density distribution of a vibrating string
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Graduate Solving Acceleration Model for Solar Drag Race
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Graduate How to prove differential property of homogeneous function
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Graduate Inverse Laplace transform for small 's', Taylor expansion
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Graduate FDM vs FEM: Which is Better for CFD?
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Graduate Understanding the Spectrum of a Linear Operator
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Graduate Understanding the Colon Notation:
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Graduate Fourier transform and singularities
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Graduate Optimizing Implicit Functions: Best Fit for Coupled ODE Solutions
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High School How to calculate the Fourier transform of sin(a*t)*exp(-t/b) ?
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Undergrad How to convolve impulses in engineering?
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Graduate Bessel's Integrals with Cosine or Sine?
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Undergrad Problem getting the coefficients of a non-homogeneous PDE using the Fourier method
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Graduate General natural boundary condition?
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Graduate Composition of a theta function with function
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Graduate Is the Saddle Point Expansion Valid for Finite Values of x?
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MHB -pe.7 write a system in the matrix form Y'=AY+G
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Undergrad How do I classify this partial differential equation? Inhomogeneous?
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Graduate Consistency Versus Convergence, seeking intuition
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Graduate An infinite series transformed from Laplace transform
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Graduate Implicit Euler method with adaptive time step and step doubling
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Undergrad What is a symmetric ODE / what does it mean when an ODE is symmetric?
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Graduate Convergence and stability in multivariate fixed point iteration
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Graduate Diffusion term, convective term and time double derivative
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Graduate Saddle point in trapping region
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Graduate Product of gradients at intersection of null clines in 2D system
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Graduate Simple Symplectic Reduction Example
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MHB How to Solve the Differential Equation x'=x+sin(t)?
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Graduate Deriving the FEA formulation using triangular elements
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Graduate Transforming coordinate system into a rotating one
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Undergrad What method should I use to get the roots of this equation?
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Graduate Matrix Exponential to Approximate the Value of Matrizant
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Graduate Positive definite function,semi-definite functions
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Graduate Algorithm for multidimensional constrained root finding
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Graduate System of cross-polynomials of variable degree
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Graduate Testing for chaos in data(method by Doyne Farmer for 3D discrete data)
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Undergrad Solve y=1- A(1-e^(-kx)) + mx +b
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Graduate Representing a factorial through its pseudo Z transform
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Graduate Solving heat equation BACK in time
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Undergrad Differential Equation's: A popular solving method
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Graduate What is the Purpose of Green's Function?
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Graduate What is a linear ordinary differential equation
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Graduate What is the Euler-Lagrange equation
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Graduate How are recurrence relations used in mathematics and computer science?
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MHB 29.1 give a system of fundamental solutions
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Graduate How to get a converging solution for a second order PDE?
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MHB How to find the eigenvectors for a given matrix using the example in a textbook?
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Graduate Irreversible processes. Heat equation, diffusion equation
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Graduate Non-homogenous convection equation
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Graduate Lecture notes on Finite Difference Methods
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High School Calculating the dot Product of \nabla and Vector Identity
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