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hamilton equations : Math Help
Solution verification with variation of parameters
integration
ordinary-differential-equations
Updated October 20, 2019 04:20 AM
1
answers
23
views
0
votes
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
0
answers
13
views
4
votes
How do you solve this differential equation using variation of parameters?
ordinary-differential-equations
Updated October 20, 2019 04:20 AM
1
answers
345
views
4
votes
non-homogenous linear ODE help
ordinary-differential-equations
Updated October 20, 2019 01:20 AM
0
answers
12
views
1
votes
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
0
answers
6
views
0
votes
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
0
answers
9
views
-1
votes
Frobenius method differential equations
ordinary-differential-equations
Updated October 19, 2019 18:20 PM
1
answers
7
views
0
votes
Is all functions generating a vector fields piecewise?
ordinary-differential-equations
vectors
nonlinear-system
vector-fields
Updated October 19, 2019 16:20 PM
0
answers
8
views
1
votes
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
3
answers
50
views
0
votes
How to factorize this quintic polynomial?
polynomials
factoring
quintic-equations
Updated October 19, 2019 14:20 PM
1
answers
15
views
0
votes
Find interval for existence and uniqueness
ordinary-differential-equations
initial-value-problems
Updated October 19, 2019 13:20 PM
2
answers
17
views
0
votes
Solving a system of ordinary differential equation with complex roots
linear-algebra
ordinary-differential-equations
Updated October 19, 2019 13:20 PM
1
answers
11
views
1
votes
How do you find the equation of a quartic with 3 inflection points?
polynomials
quartic-equations
Updated October 19, 2019 10:20 AM
1
answers
22
views
0
votes
Overdetermined system - Desired properties
optimization
systems-of-equations
Updated October 19, 2019 10:20 AM
0
answers
4
views
0
votes
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
0
answers
7
views
0
votes
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
0
answers
8
views
1
votes
Comparison Lemma
ordinary-differential-equations
inequality
nonlinear-system
Updated October 18, 2019 19:20 PM
0
answers
8
views
0
votes
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
0
answers
28
views
0
votes
Solve $x''+\frac{1}{17} x'=400$
ordinary-differential-equations
Updated October 18, 2019 18:20 PM
1
answers
25
views
0
votes
Introduction of a phase term in the solution of the wave equation
ordinary-differential-equations
trigonometry
pde
Updated October 18, 2019 03:20 AM
1
answers
9
views
1
votes
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