Hi. I use a plot with the following options:

test1r2 :=(1/6)*(-144*x*y*z+36*x^2*y-432*z^3-432*z^2*x-108*x^2*z-432*y*z^2-64*y^3+24*sqrt(3)*sqrt(108*z^4+216*z^3*y+108*z^3*x+108*y^2*z^2+27*x^2*z^2+72*x*y*z^2+32*z*y^3+64*x^3*z-36*x*z*y^2-18*x^2*y*z-61*x^2*y^2+32*x^4+32*y^4)*z+12*sqrt(3)*sqrt(108*z^4+216*z^3*y+108*z^3*x+108*y^2*z^2+27*x^2*z^2+72*x*y*z^2+32*z*y^3+64*x^3*z-36*x*z*y^2-18*x^2*y*z-61*x^2*y^2+32*x^4+32*y^4)*x)^(1/3)/(2*z+x)-(4/3)*(6*x*z+3*x^2-2*y^2)/((2*z+x)*(-144*x*y*z+36*x^2*y-432*z^3-432*z^2*x-108*x^2*z-432*y*z^2-64*y^3+24*sqrt(3...

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Hi,

I'm very new to Maple and need some help.

I have a Matrix with the structure

M:= Matrix([[2013-08-13T00:29:24+0000,"text1"],[2013-08-14T00:29:24+0000,"text2"],[2013-08-15T00:29:24+0000,"text1"],[2013-08-16T00:29:24+0000,"text1"]])

 

and would like to plot this. Now problem one obviously is, it contains a timestamp. How can I use this in Maple? Second problem is, "text1" is a string, so I cannot use plotlist because it can not be converted to a float.

Hi all,

I am having some problems when solving high order polynomials. When oders are 'high' and systems involve multiple variables, Maple is slow to do so.

See in worksheet for detailed codes.

slow.zip

kappa - gives the vector that i am interested in

sC - a reparameterisation which has 'summation' in it

Aim is to verify that it works (it should!)

I currently ask...

i have a conditional expression like this 

for i from ... do

if .... then
exp1:
exp2:
exp3:
....... 

else 

exp4:
exp5:
exp6:
.... 

end if;

od;

i face this error during caculation:
Error, reserved word `else` unexpected

what should i do?

Hi.  I'm using Maple 16 to model a quantum harmonic oscillator.  If I leave the constants k, mu, hbar unspecified, I get a correct solution to the Schrodinger equation:

 

>

I have the following pde system: sys[1] := [(D[1](u))(t, x)-(1/2*(x-x^2))*(D[2, 2](u))(t, x)-(-5.02*x+4.51+.1*x*(1-x))*(D[2](u))(t, x) = 0, u(t, 0) = 0.1e-1, u(t, 0) = 0.1e-1].

And have tried different bc's (some with derivatives at the boundary) but still get the same error: Error, (in simpl/Im) too many levels of recursion.

Could you please tell me where I am going astray?

Thank you.

Murray

Hi, 

I work with Maple as professional and I want to buy one tablet for convenient . Is there Maple for Tablet? which operating system? Android, ios or windows 8 tablet?  which one is better?

Thanks.

If I have spreadsheet data, x and y (velocity and time), I need to find distance.  I see numbers of ways to do this, however, I wonder what people would suggest as the fastest / easiest way.  I'm not needing a function really, just results.  Does Maple have tools to simplyify this process, and if not, what process(s) might yield results of determinable or selectable accuracy.  I will have many sets of data in the future that need to be manipulated...

How can I draw following piecewise closed function t in  3-dimensional cartesian space

D124:=max(-x+y+z,x-y+z,x+y-z)=1; 
D134:=max(-x+y+z,x-y+z,-x-y-z)=1;
D123:=max(-x+y+z,x+y-z,-x-y-z)=1;
D234:=max(x+y-z,x-y+z,-x-y-z)=1;

 

t:=piecewise(x>0 and y>0 and z>0,D124,x<0 and y<0 and z>0,D134,x<0 and y>0 and z<0,D123,x>0 and y<0 and z<0,D234);

Is it possible to install a 64-bit edition of Maple 17 linux version into a Windows 8 machine throughout the Cygwin64 interface?

When defining a polynomial as follows

p:=x->x^(r+1)-(r+1)*Sum((-1)^(r+k)*(r+k)!*(r+1)!*r!/((k!)^2*(r-k+1)!*(2*r+1)!)*x^k,k=0..r);

the result of

simplify((eval(p(1),r=1)));

is given as 1 whereas hand evaluation and also plotting the polynomial clearly shows that the result is 0. How can this behaviour be explained?

Hi,

How do I get ride of these Rootof?

I tried simplify,evala,value,Simplify and ect. Didnt really find anything useful.

Download rootof.mw

 

I dont care which root they actually take, all I want is one of the roots. So I can then use subs for substitution.

Casper

How can I draw following piecewise closed function in  3-dimensional cartesian space

t:=piecewise(x>0 and y>0 and z>0,D124,x<0 and y<0 and z>0,D134,x<0 and y>0 and z<0,D123,x>0 and y<0 and z<0,D234); 

 

         max(-x + y + z, x - y + z, x + y - z) = 1 ,  0 < x and 0 < y and 0 < z
         max(-x - y - z, -x + y + z, x - y + z...