JAMET

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4 years, 106 days

MaplePrimes Activity


These are replies submitted by JAMET

Bravo your rods are not elastic...Thank you.

The BC and BD rods do not retain the same length, so there is a difficult error to detect in the program.

How to shaw that any element of R² is a linear combination of (1,1) and (1,2), this decomposition is unique. The family is free and generates R². Thank you.

How to know if 2 pairs of vectors generate the same vector space ?
The 2 pairs of vectors are <1,0-1>  and <0,1,0> for une part, <2,1,-2> and <-1,2,,1> for the other. Thank you.

Sorry, I don't understand what are M, V, and sys.
How to get a base line of the linear application image ? Thank you.

Iam trying my own procedure taylor on sin(t) for t=0

f := t -> diff(sin(t), t);
f := proc (t) options operator, arrow; diff(sin(t), t) end proc

L := [seq(diff(f(t), [t $ i]), i = 1 .. 9)];
L := [-sin(t), -cos(t), sin(t), cos(t), -sin(t), -cos(t), sin(t), 

  cos(t), -sin(t)]


t := 0;
L;
                             t := 0

                 [0, -1, 0, 1, 0, -1, 0, 1, 0]

for k to 8 do
    -L[k + 1]*'t'^k/k!;
end do;
                               t

                               0

                               1  3
                             - - t 
                               6   

                               0

                              1   5
                             --- t 
                             120   

                               0

                              1    7
                           - ---- t 
                             5040   

                               0
How to get the sum ? Thank you very much.

On the model : t := 't';
taylor(sin(t), t = 0, 9);
                  1  3    1   5    1    7    / 9\
              t - - t  + --- t  - ---- t  + O\t /
                  6      120      5040           

with(LibraryTools);
LibLocation := cat(kernelopts(mapledir), "/lib/myLib.mla");
   LibLocation := "C:\Program Files\Maple 2018/lib/myLib.mla"
Create(LibLocation);
Error, (in march) archive data file could not be created
a := 10;
Save('a', LibLocation);
Error, (in LibraryTools:-Save) could not open `C:\Program Files\Maple 2018/lib/myLib.mla\a.m` for
Why this Library can't be created ? Thank ypo.

I get these messages. How to correct them ? Thank you.
Error, (in march) archive data file could not be created
Error, (in LibraryTools:-Save) could not open `C:/tmp/test.mla\MyPackage.m` for writing
Error, (in march) there is no existing archive in "C:/tmp/test.mla"
Error, invalid input: with expects its 1st argument, pname, to be of type {`module`, package}, but received MyPackage

 

My directory is Système(C)\ Program Files\Maple 2018\lib, so I have this message in the file Filters.mw: 
libname;
               "C:\Program Files\Maple 2018\lib"
LibraryTools:-Save(Filters,cat(libname[1],"/Filters.mla"));
Error, (in LibraryTools:-Save) could not open `C/Filters.mla\Filters.m` for writing
Is it possible to overcome this problem ? Thank you.

 

How to change this code  drawLines3.mw  to work with maple 18. Thank you very muche.

Thank you for your answer. Is it possible showing without geom3d ?

With the 3 lines and their projections on the same drawing, the program crashes (maple 18) ; If I try : display(doPlot(a), doPlot(b), doPlot(rhs~(convert(c,list))));I have the information: [La longueur de sortie d←passe la limite de 1%]; How do I manage ? Thank you.

Sorry for my bad explications. I wish the 3 lines a, b, c and their projections on the same ploting. Thank you.

how to make a fold as in descriptive geometry and represent the 3 lines in the 2 planes O,x,z and O,x,-z as well as the ground line; Is it possible ? Thank you very much.

how to avoid confusion between sol1 and 2 in Fig

Fig := proc (k)
local theta, Cor, corde, P, tgP, sol, tgP1, TgP, TgP1;
global a, b, ell, Lieu; theta := k;
corde := a*x/cos(theta)-b*y/sin(theta) = a^2-b^2;
P := [a*cos(theta), b*sin(theta)];
tgP := x*P[1]/a^2+y*P[2]/b^2 = 1;
sol := solve({ell, corde}, {x, y}, explicit);
tgP1 := x*rhs(sol[2][1])/a^2+y*rhs(sol[2][2])/b^2 = 1;#there is confusion between sol[1)and sol[2]
Cor := implicitplot(corde, x = -a .. a, y = -b-5 .. b+5, color = blue);
TgP := implicitplot(tgP, x = -15 .. 15, y = -15 .. 15, color = green);
TgP1 := implicitplot(tgP1, x = -15 .. 15, y = -15 .. 15, color = magenta);
display([Ell, Cor, Lieu, TgP, TgP1], axes = normal, view = [-15 .. 15, -10 .. 10], scaling = constrained) end proc;
Fig(Pi/6):
nframes := 30; 
plots:-display([seq(Fig(2*Pi*i/nframes+0.001), i = 1 .. nframes)], insequence, scaling = constrained)
Thank you for your answer.

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