hamilton equations : Math Help

Solution verification with variation of parameters

integration ordinary-differential-equations
Updated October 20, 2019 04:20 AM

Primitive instances where $c^3|(a^3+b^3)$ with $a,b,c\in\mathbb{N}$

number-theory elementary-number-theory diophantine-equations integers cubic-equations
Updated October 20, 2019 04:20 AM

How do you solve this differential equation using variation of parameters?

ordinary-differential-equations
Updated October 20, 2019 04:20 AM

non-homogenous linear ODE help

ordinary-differential-equations
Updated October 20, 2019 01:20 AM

Reference request: error estimates for pendulum with small-angle approximation

ordinary-differential-equations physics stability-in-odes stability-theory linearization
Updated October 20, 2019 00:20 AM

Find the value of $(a, b, c)$ with $a, b, c \in \Bbb N$

systems-of-equations quadratics natural-numbers
Updated October 19, 2019 23:20 PM

Frobenius method differential equations

ordinary-differential-equations
Updated October 19, 2019 18:20 PM

Is all functions generating a vector fields piecewise?

ordinary-differential-equations vectors nonlinear-system vector-fields
Updated October 19, 2019 16:20 PM

Find three rational numbers $a,b,c$ s.t. $c^2-b^2=b^2-a^2=1111$.

number-theory diophantine-equations
Updated October 19, 2019 15:20 PM

How to factorize this quintic polynomial?

polynomials factoring quintic-equations
Updated October 19, 2019 14:20 PM

Find interval for existence and uniqueness

ordinary-differential-equations initial-value-problems
Updated October 19, 2019 13:20 PM

Solving a system of ordinary differential equation with complex roots

linear-algebra ordinary-differential-equations
Updated October 19, 2019 13:20 PM

How do you find the equation of a quartic with 3 inflection points?

polynomials quartic-equations
Updated October 19, 2019 10:20 AM

Overdetermined system - Desired properties

optimization systems-of-equations
Updated October 19, 2019 10:20 AM

Show that there exists no solution with $(x, y, z)$ ∈ $\mathbb N^+ × \mathbb N^+ × \mathbb N^+$

number-theory elementary-number-theory diophantine-equations
Updated October 19, 2019 09:20 AM

What do two ODEs with the same Lyapunov function have in common

ordinary-differential-equations dynamical-systems lyapunov-functions
Updated October 19, 2019 06:20 AM

Comparison Lemma

ordinary-differential-equations inequality nonlinear-system
Updated October 18, 2019 19:20 PM

Find all functions $ f: \mathbb{R} \to \mathbb{R}$ satisfying $f(x + y) = x + f(y)$

functional-equations
Updated October 18, 2019 18:20 PM

Solve $x''+\frac{1}{17} x'=400$

ordinary-differential-equations
Updated October 18, 2019 18:20 PM

Introduction of a phase term in the solution of the wave equation

ordinary-differential-equations trigonometry pde
Updated October 18, 2019 03:20 AM

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