10.22.3 Can you answer these questions?

10.22.3.1 Numerical Solutions of DE with Symbolic Calculation
10.22.3.2 How to type a key combination in Mathematica notebook?
10.22.3.3 How to control maximum and minimum coordinates in ImageMesh[]?
10.22.3.1 Numerical Solutions of DE with Symbolic Calculation

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=304910

Dear Mathematica users, 
I am trying to solve a system of differential equations (on Mathematica 14.0) 
$0=\ddot{v}-\frac{M}{r^2}(\dot{v})^2$ 
$0=\ddot{r}-\frac{r^2 M'-rM+2M^2}{r^3}(\dot{v})^2+\frac{2M}{... 
[numerical-integration] [symbolic]
 
asked by Jiwoo Hong https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=99813 Score of 1
10.22.3.2 How to type a key combination in Mathematica notebook?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=304924

I'm writing a tech note in Mathematica, and would like to include some key combination shortcuts. For example, Ctrl+/ for entering fractions. How do I typeset key combinations so that they look like ... 
[formatting] [keyboard]
 
asked by nflswsykimi https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=29461 Score of 2
answered by Alexei Boulbitch https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=788 Score of 0
10.22.3.3 How to control maximum and minimum coordinates in ImageMesh[]?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=304848

I  am  trying  to use ImageMesh to create a mesh from voxel data. On this mesh I would like to calculate the coordinates of the vertices sitting on the boundary, an equivalent approach would be to ... 
[mesh] [image3d]
 
asked by Dunlop https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=40819 Score of 2