List questions from ordinary-differential-equations

Published on 11 May 2026 - 7:38

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Find all positive differentiable functions $f$ that satisfy $\int_0^x \sin(t) f(t) dt = [f(x)]^2.$

Published on 15 Apr 2026 - 20:12

119

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Why I can't divide $\frac{d^3}{dx^3}$ and $\frac{d^2}{dx^2}$

Published on 18 Apr 2026 - 10:24

216

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Construct Two Linearly Independent Power Series Solutions to $(1+z^2)u''+3zu'+u=0$

Published on 15 Apr 2026 - 18:14

73

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Differential equation system with x(s), y (s) and z(s) Where $s$ is the curvilinear abscissa

Published on 16 Apr 2026 - 9:02

166

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Bistable equation, phase portrait, existence of intersection points

Published on 09 Apr 2026 - 0:57

65

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Need to solving 2nd order nonlinear ode.

Published on 13 Apr 2026 - 22:54

718

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Definition of a solution of a differential equation?

Published on 16 Apr 2026 - 3:58

255

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Let $\lambda\in \sigma(A).$ Then, $e^{\lambda t}\in \sigma(e^{tA})$ where $\sigma(A)$ is set of all eigenvalues of matrix $A$

Published on 10 Apr 2026 - 20:33

80

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Find a differential equations using linear algebra

Published on 14 Apr 2026 - 21:00

1.2k

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Definition of ODE and flow on manifold.

Published on 10 May 2026 - 16:05

54

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Homogeneous differential eqn $(e^{3y} -y) \cos(x) {dy \over dx} = e^y \sin(x)$

Published on 10 May 2026 - 16:56

89

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The solution of ODE is not the same as the implicit equation it was used for.

Published on 11 Apr 2026 - 1:41

4.6k

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"Damped" wave equation with Fourier method

Published on 11 May 2026 - 7:38

163

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Solving differential forms?

Published on 16 Apr 2026 - 6:56

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Vibrating string and Fourier series

Find all positive differentiable functions $f$ that satisfy $\int_0^x \sin(t) f(t) dt = [f(x)]^2.$

Why I can't divide $\frac{d^3}{dx^3}$ and $\frac{d^2}{dx^2}$

Construct Two Linearly Independent Power Series Solutions to $(1+z^2)u''+3zu'+u=0$

Differential equation system with x(s), y (s) and z(s) Where $s$ is the curvilinear abscissa

Bistable equation, phase portrait, existence of intersection points

Need to solving 2nd order nonlinear ode.

Definition of a solution of a differential equation?

Let $\lambda\in \sigma(A).$ Then, $e^{\lambda t}\in \sigma(e^{tA})$ where $\sigma(A)$ is set of all eigenvalues of matrix $A$

Find a differential equations using linear algebra

Definition of ODE and flow on manifold.

Homogeneous differential eqn $(e^{3y} -y) \cos(x) {dy \over dx} = e^y \sin(x)$

The solution of ODE is not the same as the implicit equation it was used for.

"Damped" wave equation with Fourier method

Solving differential forms?

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