## Symbolic resolution of trigonometric equations sys...

Hello,

I would like to determine a closed form solution (=analytical solution) of the following trigonometric equations system.

The unknowns are :

ListAllUnknowns := [Psi(t), Theta[1](t), Theta[2](t), x[1](t), x[2](t), z[1](t), z[2](t)]

Do you have ideas so as to conduct the symbolic resolution of this trigonometric equations system ?

I have been told that the use of Grobner basis could be useful but I have never try this.

Thanks a lot for yours feedbacks.

## Debugger irritation...

The font size in the output pane of the standard interface, interactive debugger is really, really small and I can't figure out how to increase it. (Other than drop my screen resolution from its native 2560x1440, which makes it bigger but "fuzzier" - not a huge improvement for tired eyes!!)

## How to verify one solution using the maple...

I would like to know how to verify
y=x e5x cos(2x)
is a solution to the differential equation
y(4) -20 y”’+158 y”-580y’+841y=0

## Is there a way to export high quality images from ...

Hi every one.

I want to export some plots from maple as images in ".jpg" or ".png" formats. I was wondering that is there a way to specify the resolution of the exported pictures? I need high quality pics.

HI, dear all. When I tried to use the plot option 'adaptive' to make my plot more smooth and realistic, I encountered the following erro. I cannot understand why. From the help guide, I learn that adaptive can be assigned n or true or false, but errors appeared.  Thanks for your help.

> implicitplot(-x^3+3*x+a = 0, a = -3 .. 3, x = -4.0 .. 4.0, view = [-3 .. 3, -4 .. 4], adaptive = 2, resolution = 1000, numpoints = 2000);
Error, (in plot/options2d) unexpected option: adaptive = 2

## Solver : Warning, solutions may have been lost...

Hi I have a problem with the resolution of an equation. When I tried to solve it it returns "solutions may have been lost"... Here is the problem:

`restart:with(Statistics):> x:=rand()/10^12;                               197859430267                          x := ------------                               500000000000> X:=RandomVariable(Gamma(2,4));                               X := _R> XL:=RandomVariable(ChiSquare(3));`