-
(Opening a separate issue from SciML/DiffEqOperators.jl#153 SciML/DiffEqOperators.jl#146 which are about the lazy operators)
Add vector calculus operators (`Laplacian`, `Divergence`, `Gradient`) to…
-
See [this ask.sagemath question](http://ask.sagemath.org/question/24532/). Original report is
```
sage: F = sqrt((cos(x) - 1)^2 + sin(x)^2)
sage: F.integrate(x, 0, 2*pi)
0
```
but the answer shou…
-
See this example in Sage 9.4 or Sage 9.5.beta7:
```
sage: f(x) = (x + sin(3*x)) * exp(-3*x*I)
sage: h(x) = f(x) - f(x).expand()
sage: integral(h(x), (x, 0, 2*pi))
I*pi
```
The answer should be 0 (t…
-
Reported at [this SF bug](https://sourceforge.net/p/maxima/bugs/2773/), we have
```
solve([sin(cos(x))/cos(x)==0],x) gives:
[x == 1/2*pi]
```
Upstream: **Reported upstream. No feedback yet.**
C…
-
```
- What steps will reproduce the problem?
This is the example taken from the documentation page on quadratures, with three additional lines added:
from mpmath import *
mp.dps = 15; mp.pretty = Tr…
-
We get a "solution" from `solve()` that isn't actually a solution:
```
sage: f(x) = (sin(x) - 8*cos(x)*sin(x))*(sin(x)^2 + cos(x)) - (2*cos(x)*sin(x) - sin(x))*(-2*sin(x)^2 + 2*cos(x)^2 - cos(x))
s…
-
### Describe the Bug
I'm trying to make a node rotatable, and when rotating it, making its child nodes rotate with it. But when I try to do it without changing the child nodes, it goes like this:
…
-
Maxima interface returns a wrong result of this definite integral:
```
sage: integrate(exp(arccos(x)),x,0,1, algorithm='maxima')
-1/2*e^(-1/2*pi) + 1/2
```
while it should…
-
Version 19.5 seems to be missing the SIGMA and PI functions for calculating the sum or product of direct function sequences.
TI-84 and HP Prime have such convenient functions in their toolboxes whe…
-
Have you considered behavioral types a la [SLMC](http://ctp.di.fct.unl.pt/SLMC/)?
- Luís Caires, Behavioral and Spatial Observations in a Logic for the Pi-Calculus, FoSSaCS 2004, ETAPS 2004, Barce…