Hi!

If somebody could help me it would be awesome!

I would like to be able to switch the independent variable onto the vertical axis!

If that is not possible, what i'm trying to do is modelise in a function a set of points, but with multiple values for the same x, but not more than one for the y, so the best option would be to switch the variables, to have x dependant of y. My graphic has to be vertical though, so I can't just switch the points.

Thank you a lot

Charlotte

I'm not sure if this is possible but I have a very accurate fraction, say something like 1,000 digits / 1,000 digits. What I'm wanting to do is effectively turn this into a fraction like 100 digits / 100 digits.

For example (on a much smaller scale) I have 151/11 and would like to turn this into 41/3 From 3 digits/2 digits to 2 digits/1 digits.

How would I do that?

Thanks

Experts,

This may sound like a dumb question, but i'm seeking a procedure to do it better.
 

Download add_1.mw

Please sir,

I am trying to solve this problem and is giving me the error code "Error, (in thaw) numeric exception: division by zero
". Anyone with useful informations please.

Thanking you in anticipations for your response. 

Download 123.mw

Dear all;

I have a function  C(S,t)  and I would like to show that this function is the solution of Partial differential equation ( denotes by PDES). I introduce all my function but when I try to simplify my PDES, I can not get zero as result. 

Many thanks for your help to simplify the PDES to get PDES=0. So, that C(S,t) is the solution of my PDEs.

simplification.mw

I am trying to construct a random set of angles measured in degrees with pairs that are the equivalent in radians.  for example [0,0],[90,Pi/2],[-30,-Pi/6],etc...  but completely random.

so far I have the following:

restart;
randomize();
a := rand(-90 .. 90);
seq([a(i), convert(a(i)*degrees, radians)], i = 1 .. 4);

the trouble is it appars it is randomizing a both times it is called in the sequence.  I would like to have it randomize for each iteration in the sequence.

thanks in advance.

hi
I want to solve a pde equation:
 

equa1 := diff(u(x,y), x, x)-y(1+x) = 0;

# with codition:

con:=u(0,y) = 0, (D(u[x]))(0,y) = 0;

the anwer must be :    u(x,y)= y(x²/2  + x³/6)
How can i solve that with maple?

Please excuse my bad English
thanks

I am plotting a pair of lists of points using

pointplot(Listap, Listbp, symbol = point, symbolsize = 1, size = [1200, 1200])

How could is do this with plot so I can add colours? Along the lines Listap(i)^2+Listbp(i)^2 =R, R is in the range 0..1,then colour =R*256 or any other imaginative way of adding colour.
 

Download 096-Chayley_transform_for_MP_question.mw

Hello,

On a plot, how do I change the size of the probe info text box ? I cannot read the very small text displayed when the probe info is active. My laptop screen size is only 13 inches.

Thank you

So I have the following:

And I want to create an animation similar to something like:

Not necesarily 3D. Just the interative slider part. 

I want to create a slider that adjusts the value of the exponent  (from the red curve) from 1 to say, 1000. 

I also want it to show the corresponding value of   on the application.

I'm sure its pretty simple, it's just that I have no idea where to start.

Hello I have the following small piece of code.

XMLTools[Print](MathML[Export]('sin(theta)'=0.25));

which exports sin(theta)=.25, how do I force the 0 to display.

Also

why does the following fail:

sol:=solve([cot(x)=2,x>=0,x<2*Pi],x,AllSolutions, Explicit);

How do I get a system solve to dispaly an ordered triple and not {x=ans, y=ans, z=ans}

for instance

sys := { z = 4, x+y= 10, x-y = 5 };
L:=solve(sys, {x,y,z} );

displays

{x=7.5, y=2.5, z=4}

I want 

{7.5,2.5,4}

I have a piecewise that exists on a large intervals, say [-5..15], however, I know need the function to represent [1..9].

There are two approaches I know of: using convert(f,pwlist) or using op(n,f), see attachments. PiecewiseTruncate.mw    and  PiecewiseTruncate.pdf

However, these two methods are not elegant enough, I have to reassemble the pieces in the new function.

How to make the solution neat?

Thanks,

I really want to use if condition inside of eval and sum, example as below:

sum(eval(y=x^(j),(if j=1 then x=2 else x=3 fi)),j=1..2)

The reason is: the value of x to be evaluated depends on the value of j which differs inside of the sum (in the context of B-spline functions).

Any lights? Thanks,

i tried to solve a nonlinear ode with numerical method but maple can't solve it and this error occur:

Error, (in dsolve/numeric/bvp) initial Newton iteration is not converging

my maple codes are attached below:

numeriacal_sol.mw

can any help me?