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 Specification of the boundary condition in high order PDE
- jollage
- · Replies 1 ·
Graduate Newton's Law of Cooling and other Models
- leehufford
- · Replies 3 ·
Finding region of xy plane for which differential equation has a unique solution
- find_the_fun
- · Replies 1 ·
Graduate Riemann Hypothesis for dynamical systems
- zetafunction
- · Replies 1 ·
Undergrad For which PDEs is the solution in the form of F(x)*G(t)?
- Nikitin
- · Replies 6 ·
Undergrad Can I split up the left hand side of an ODE?
- GreenAce92
- · Replies 3 ·
Finding c₁ and c₂ for IVP with x''+x=0 and initial conditions at t=π/6
- find_the_fun
- · Replies 5 ·
What is the Poisson Integral Formula for a Two-Dimensional Plate with a Hole?
- Dustinsfl
- · Replies 1 ·
Making up a differential equation with no real solutions
- find_the_fun
- · Replies 2 ·
Verifying solution to first order differential equation
- find_the_fun
- · Replies 3 ·
Graduate Separation of variables for Laplace equation with mixed BCs
- hbl2012
- · Replies 2 ·
Undergrad How to call a built function in mathematica
- Reem Hashem
- · Replies 4 ·
Infinite domain to finite plate by a change of variables
- Dustinsfl
- · Replies 2 ·
Graduate Transforming PDE solutions back with inverse transformations
- re444
- · Replies 3 ·
Is It Linear in the Indicated Dependent Variable?
- find_the_fun
- · Replies 1 ·
Graduate Solving ODE for $\sigma$: Transformation and Manipulation?
- Juggler123
- · Replies 1 ·
Graduate Solve x³y″(x) + (ax³ + bx² + cx + d)y(x) = 0
- saidMath
- · Replies 2 ·
Undergrad Construct DE w/ Soln y(t) = e^t cos(3t)
- LocalStudent
- · Replies 3 ·
Undergrad Are equilibrium solutions where dy/dt = 0?
- Bashyboy
- · Replies 2 ·
Undergrad Substituting w=y' in the Differential Equation
- Turion
- · Replies 2 ·
Undergrad How to Use FindRoot for Determinant with Fixed Values?
- Reem Hashem
- · Replies 2 ·
Graduate Solving a differential equation with parameters n and p
- Kvad
- · Replies 7 ·
Undergrad How do I find the complete solution for x'=(2, 3, -1, -2)x+(e^t, t)?
- Success
- · Replies 1 ·
Plotting runge kutta 4 stability region
- Dustinsfl
- · Replies 6 ·
Graduate Simplifying an integral expression involving Airy functions
- Irid
- · Replies 15 ·
Undergrad Why Does My Differential Equation Solution Differ by a Sign?
- rxfudd
- · Replies 2 ·
Graduate Is there a quantitative measure for the nonlinearity of PDEs?
- hitmre
- · Replies 2 ·
Graduate Laplace Transform Question
- starzero
- · Replies 1 ·
Thingsto Do's question at Yahoo Answers regarding a first order homogeneous IVP
- MarkFL
- · Replies 1 ·
Finding real values in $(2x-1)^{20}-(ax+b)^{20}=(x^2+px+q)^{10}$
- anemone
- · Replies 5 ·
Undergrad Similarity between exact equations and potential functions
- leehufford
- · Replies 4 ·
Graduate Is the Airy Function Normalized?
- Irid
- · Replies 2 ·
High School Is an equilibrium solution always zero in differential equations?
- ehabmozart
- · Replies 1 ·
Min of an Integral lagrange multipliers for E-L
- Dustinsfl
- · Replies 1 ·
Solving xu_t + uu_x = 0 with change of variables
- ryo0071
- · Replies 3 ·
Graduate Convert differential equation to finite difference equation
- Hypatio
- · Replies 5 ·
Relation between H₂ₙ(x) and Lₙ⁽⁻¹/²⁾(x²)
- Suvadip
- · Replies 1 ·
Euler-Lagrange equation first integral question
- Dustinsfl
- · Replies 9 ·
Graduate How to Derive the General Solution for a Differential System with Complex Roots?
- Success
- · Replies 3 ·
Graduate Finite Fourier Transform on a 3d wave
- brandy
- · Replies 2 ·
Integrating factor in Exact Equations
- alane1994
- · Replies 8 ·
Can any twice-differentiable function satisfy these conditions?
- Dustinsfl
- · Replies 3 ·
Coupled ODEs from Euler Lagrange eq
- Dustinsfl
- · Replies 1 ·
Graduate Differential Equation Containing Natural Log of Negative e
- chrisa88
- · Replies 2 ·
Graduate Why do we take the derivative of g(x) when using the method of
- Turion
- · Replies 5 ·
Inflection Point of the Threshold Equation
- MacLaddy1
- · Replies 6 ·
Graduate Finding Non-trivial solutions to ODE in Mathematica
- sci-phy
- · Replies 1 ·
Undergrad General solution of dx/dt = (1/2)x+4 with x(0)=1
- zibb3r
- · Replies 4 ·
Undergrad Did my professor do this laplace-inverse wrong?
- Nikitin
- · Replies 1 ·
Graduate Sigularity problem in NDSolve in mathematica
- moudas
- · Replies 1 ·
Graduate General Solution for a 2x2 Matrix Differential Equation
- Success
- · Replies 1 ·
Graduate General Solution for a 2x2 Matrix with Complex Eigenvalues
- Success
- · Replies 1 ·
How to Solve This Homogeneous Differential Equation?
- nacho-man
- · Replies 4 ·
Graduate Linearization of Ricatti equations
- mathnerd15
- · Replies 2 ·
Determine whether equation is exact.
- alane1994
- · Replies 2 ·
Where can I find info on the partial derivative of elastic energy wrt position?
- datahead8888
- · Replies 1 ·
Undergrad How does dy/dt=ry end up with the constant multiple on the right?
- oneamp
- · Replies 2 ·
A question regarding initial values and verifying solutions
- nathancurtis111
- · Replies 2 ·
Where Do Theorem 2.4.2 Conditions Apply for \(y'=\frac{t-y}{2t+5y}\)?
- alane1994
- · Replies 2 ·
How do I show a prediction-correction method has truncation order 2?
- nacho-man
- · Replies 1 ·
2 questions regarding initial values and verifying solutions
- nathancurtis111
- · Replies 5 ·
Motion of Falling Body w/ Varying Drag: Farah's Q on Yahoo Answers
- MarkFL
- · Replies 1 ·
Skydiver/Physics Diff.Eq. Problem
- alane1994
- · Replies 2 ·
Proofs regarding uniform circular motion in vectors
- skate_nerd
- · Replies 5 ·
Graduate Questions about derivation of equation
- roldy
- · Replies 10 ·
Determining if equation is linear in indicated dependent variable
- find_the_fun
- · Replies 11 ·
In the simplest qualitative terms what is a differential equation?
- find_the_fun
- · Replies 6 ·
Graduate 2nd order ODE's odd and even functions
- ppy
- · Replies 3 ·
How Much Does It Cost to Repay a $8000 Car Loan with 10% Interest in 3 Years?
- alane1994
- · Replies 3 ·
Undergrad How did they isolate y in this seperable equation?
- oneamp
- · Replies 12 ·
Undergrad Solving differential equations with different differential notation?
- jaydnul
- · Replies 7 ·
Graduate Bessel vs Modified Bessel Eqn solve PDE
- dspampi
- · Replies 2 ·
Graduate Exact Differential Equations of Order n?
- bolbteppa
- · Replies 3 ·
Finding Salt Concentration in a Tank with Limited Capacity
- alane1994
- · Replies 5 ·
Modeling with a First Order Equation
- alane1994
- · Replies 10 ·
Solving y' = 3x²/(3y² - 4) with y(1) = 0
- alane1994
- · Replies 11 ·
Why can y(x) be rewritten as just y?
- find_the_fun
- · Replies 3 ·
Undergrad Very basic question on derivative notation
- ledphones
- · Replies 2 ·
Verifying a solution to an ODE
- MarkFL
- · Replies 1 ·
Graduate PDE - Boundary value problem found in QM
- kostas230
- · Replies 3 ·
Undergrad Is is possible to learn second-order DE before first-order?
- Turion
- · Replies 1 ·
Graduate Why Is \(u(r,\theta,\phi)\) Treated as a Function of \(r\) Here?
- yungman
- · Replies 29 ·
Undergrad Solving x'=-x and x'=x² with initial conditions
- kingpen123
- · Replies 1 ·
Does this third-order nonlinear equation have a standard name?
- Dustinsfl
- · Replies 1 ·
Nathan Curtis' Question at Yahoo Answers regarding Differential Equations
- Chris L T521
- · Replies 2 ·
Undergrad Finding error solving x dy/dx = y² - 1 by separation
- asdfghhjkl
- · Replies 2 ·
Undergrad How can you solve differential equations reducible to exact form?
- suryanarayan
- · Replies 1 ·
Graduate What is the solution to the ODE with p=1/3, f(x)=-3/2x, and g(x)=2/3?
- suryanarayan
- · Replies 2 ·
Graduate Nonlinear coupled differential equation system - kinetics
- LiAlH4
- · Replies 2 ·
Graduate Why can you separate variables in differential equations?
- Bashyboy
- · Replies 2 ·
Graduate Domain of Sturm-Liouville operators
- hellofolks
- · Replies 4 ·
Graduate Boundary conditions for mixed-order PDE terms
- jollage
- · Replies 6 ·
Graduate Locally bounded linear differential operators
- greentea28a
- · Replies 3 ·
Fallin' staR's question at Yahoo Answers regarding kinematics
- MarkFL
- · Replies 1 ·
Can you spot the error in my substitution method for solving this DE?
- MacLaddy1
- · Replies 4 ·
Graduate Inverse Laplace Transform of a product of exponential functions
- metdave
- · Replies 1 ·
Graduate Eigenvalue problem and initial-value problem?
- jollage
- · Replies 2 ·
Undergrad Does Laplace and Poisson's equation have to be for static condition?
- yungman
- · Replies 14 ·
Undergrad Differential Equations for Physics
- Astrum
- · Replies 9 ·
No-One's question at Yahoo Answers regarding Newton's Law of Cooling
- MarkFL
- · Replies 10 ·