Question

How to show that a given differential equation has no solution?

score 502 · Answer 1 · 2026-02-23 03:05:18

502

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How to show that a given differential equation has no solution?

Published on 23 Feb 2026 - 3:05

score 82 · Answer 2 · 2026-03-30 13:36:03

82

Views

Matrix method of solving non homogenous linear equations

Published on 30 Mar 2026 - 13:36

score 495 · Answer 3 · 2019-08-14 09:20:09

495

Views

How to solve a system of 7 equations with 7 unknowns being all the equations similar to each other

Published on 14 Aug 2019 - 9:20

score 144 · Answer 4 · 2019-08-14 18:13:47

144

Views

Prove $Ax = \frac{1}{2}x$ only has the trivial solution where $A$ has all integer entries.

Published on 14 Aug 2019 - 18:13

score 156 · Answer 5 · 2019-08-15 13:12:14

156

Views

System of differential equations without solution?

Published on 15 Aug 2019 - 13:12

score 106 · Answer 6 · 2026-03-25 20:08:10

106

Views

Resolving system with Chinese Remainder Theorem

Published on 25 Mar 2026 - 20:08

score 44 · Answer 7 · 2026-03-26 18:57:49

44

Views

Solving a Probabilistic Integral Equation

Published on 26 Mar 2026 - 18:57

score 56 · Answer 8 · 2019-08-15 17:59:38

56

Views

Can this system of trigonometric equations be solved? How to solve it?

Published on 15 Aug 2019 - 17:59

score 242 · Answer 9 · 2026-03-25 07:45:56

242

Views

Determining the truth of $\forall \; n \in Z, \exists \; a,b \in Z$ : $n=4a+5b$ $\implies$ $n^2 = 5a+4b-1$

Published on 25 Mar 2026 - 7:45

score 32 · Answer 10 · 2019-08-17 13:37:21

32

Views

Solutions of a system with parameter $a$ and three unknown $x,y,z$

Published on 17 Aug 2019 - 13:37

score 82 · Answer 11 · 2019-08-17 20:16:42

Prove that if a linear system has infinitely many solutions, then any solution could be written as a linear function of free parameters, thanks.

score 44 · Answer 12 · 2019-08-17 23:21:02

44

Views

Minimising the result of multiple equations

Published on 17 Aug 2019 - 23:21

score 116 · Answer 13 · 2026-03-28 11:35:24

116

Views

Solve for $x, y \in \mathbb R$: $(x^2 - 1)^2 + 3 = \dfrac{6x^5y}{x^2 + 2}, 3y - x = \sqrt{\dfrac{4x - 3x^2y - 9xy^2}{x + 3y}}$

Published on 28 Mar 2026 - 11:35

score 283 · Answer 14 · 2026-03-26 14:42:57

283

Views

Explicit Euler or implicit Euler for $\dot{y}=\begin{pmatrix} -600 & 400 \\ 400 & -600 \end{pmatrix}y$, $t\in[t_0,t_e]$, $y(t_0) = y_0$

Published on 26 Mar 2026 - 14:42

score 100 · Answer 15 · 2026-03-30 06:46:14

100

Views

System of three non-linear equations

Published on 30 Mar 2026 - 6:46

List Question

How to show that a given differential equation has no solution?

Matrix method of solving non homogenous linear equations

How to solve a system of 7 equations with 7 unknowns being all the equations similar to each other

Prove $Ax = \frac{1}{2}x$ only has the trivial solution where $A$ has all integer entries.

System of differential equations without solution?

Resolving system with Chinese Remainder Theorem

Solving a Probabilistic Integral Equation

Can this system of trigonometric equations be solved? How to solve it?

Determining the truth of $\forall \; n \in Z, \exists \; a,b \in Z$ : $n=4a+5b$ $\implies$ $n^2 = 5a+4b-1$

Solutions of a system with parameter $a$ and three unknown $x,y,z$

Prove that if a linear system has infinitely many solutions, then any solution could be written as a linear function of free parameters, thanks.

Minimising the result of multiple equations

Solve for $x, y \in \mathbb R$: $(x^2 - 1)^2 + 3 = \dfrac{6x^5y}{x^2 + 2}, 3y - x = \sqrt{\dfrac{4x - 3x^2y - 9xy^2}{x + 3y}}$

Explicit Euler or implicit Euler for $\dot{y}=\begin{pmatrix} -600 & 400 \\ 400 & -600 \end{pmatrix}y$, $t\in[t_0,t_e]$, $y(t_0) = y_0$

System of three non-linear equations

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