List questions from euler-lagrange-equation

72

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Functional derivative of the functional $\int_{x_0}^{x_1} \left( y'^4(x) + e^{2y(x)} \right) \, \mathrm{d}x$

Published on 21 Mar 2017 - 21:26

438

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Equations of motion from a vector based Lagrangian

Published on 22 Mar 2017 - 11:19

638

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Show that a functional has no minimum in a given set

Published on 23 Feb 2026 - 12:01

1.5k

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pendulum on a string problem, involving finding the lagrangian and moment of inertia

Published on 23 Mar 2017 - 23:00

243

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problem involving inertia

Published on 25 Mar 2017 - 12:54

277

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Euler-Lagrange equations

Published on 01 Apr 2017 - 10:43

952

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Linearising equations of motion

Published on 26 Mar 2026 - 7:57

156

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Calculus of Variations with first derivative boundary conditions

Published on 23 Feb 2026 - 12:04

93

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The catenary Lagrangian

Published on 17 Feb 2023 - 20:22

168

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How do I decide if the solution of the E-L equations is a minimizer?

Published on 23 Feb 2026 - 12:04

159

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Finding equation of motion for given Lagrangian with respect to metric

Published on 23 Feb 2026 - 12:06

119

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Find the $v$ that minimizes the integral $\displaystyle \int_{-\infty}^{\infty}p(x)\text{log}\frac{p(x)}{g(x,v)}dx$

Published on 22 Feb 2023 - 23:06

224

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Find the infimum of $J(\phi) = \int_{\phi}^{} e^x dl$

Published on 23 Feb 2026 - 12:04

154

Views

Is there an invariant way to derive the energy-momentum tensor?

Published on 28 Feb 2023 - 3:31

140

Views

Geodesics are extremals with constant speed proof

Published on 08 Mar 2023 - 11:32

List Question

Functional derivative of the functional $\int_{x_0}^{x_1} \left( y'^4(x) + e^{2y(x)} \right) \, \mathrm{d}x$

Equations of motion from a vector based Lagrangian

Show that a functional has no minimum in a given set

pendulum on a string problem, involving finding the lagrangian and moment of inertia

problem involving inertia

Euler-Lagrange equations

Linearising equations of motion

Calculus of Variations with first derivative boundary conditions

The catenary Lagrangian

How do I decide if the solution of the E-L equations is a minimizer?

Finding equation of motion for given Lagrangian with respect to metric

Find the $v$ that minimizes the integral $\displaystyle \int_{-\infty}^{\infty}p(x)\text{log}\frac{p(x)}{g(x,v)}dx$

Find the infimum of $J(\phi) = \int_{\phi}^{} e^x dl$

Is there an invariant way to derive the energy-momentum tensor?

Geodesics are extremals with constant speed proof

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