Hi!

I have one equation consists of "x" and "y(x)". This equation does not have any analytic solution, but I found a numeric solution by using "implisitplot". But, apparently this solution is not very good because if I want to plot anything which is related to either itself or its derivatives such as:

a(x) := y(x) + 1

or

b(x) := diff(y(x), x) + 1

I don't have any good result. What shall I do? Can you...

Hi!

Thanks a lot. you solved my first problem. Now I have a new problem. Consider I have an equation like:

w(z) = 1-(2/H(z))*diff(H(z),z)

I want to plot "w" with respect to "z", but since with latter solving I don't have any functional form for H(z) I can't. What's your suggestion for this?

Thank you!

Dear guys!

I know that an analitical solution of an aquation of order "n" like this is impossible. But I give you a simple example. For the equation y(x)^2+y(x)+x=0, we have a solution like y(x)=(-1+-sqrt(1-4*x))/2. But here we have an equation of the form

y(x)^(-0.2)*[y(x)^2-(1+x)^3-(1+x)^4]=1. I'm sure it has a numerical solution. What do you think? 

This is what I'm trying to do:

> d := 40*Unit(m);                      

> a := .170*Unit(m/s^2);

> x := d+(1/2)*a*t^2;

> plot(x, t);

Error, (in plot) the units `m` and `m/s^2` have incompatible dimensions

Is there any way to tell Maple that my t is a variable of seconds?

First problem:

I have the following loop within some longer code. If I execute the worksheet, the loop gets stuck in the "print(within*loop)" section and never stops. 

Second problem:

If I don't restart the sheet, Equation 3 doesn't do the 'subs' command properly. Also, if I put the "with(Package)" commands in the beginning, Equation3  also fails to do the subs properly. 

Thanks!

Hi! I have an aquation and I want to solve it numerically. How can I do that?

The equation is:

H(z)^(2*n)*(H(z)^2-K1*(1+z)^3-K2*(1+z)^4)=1-K1-K2;

where K1 = 0.27, K2 = 5*10^(-5) and n = -0.1.

Thanks a lot!

 I want to solve this

Hi

The function of my problem is:

where a=0,x=0.5 and ξ=.25 i want to find reminder of f(x),R, and then plot R-n plot(n is degree of diff)

Hint:

This post is a further development of my earlier question in reply to John's post. I have implemented a basic version of the CANDECOMP/PARAFAC algorithm referred to on Wikipedia and described 

I am trying to transform this expression:

into this expression

using the equation:

Hi,

How does one raise or lower indices of tensors when one is using the atlas package. Do we have to create a table and then use the inbuilt maple command raise/lower to do this or can one do this within the atlas package.

thanks

i'm trying to run the following procedure:

> restart; with(LinearAlgebra);
> test:=proc(alpha, beta);
print(`output redirected...`); # input placeholder
Error, unterminated procedure
         testAssignTypesetting:-mambiguous(

           procApplyFunction(αcomma β),

           Typesetting:-merror...

Every so often when I press return, the cursor will not move to another line.  I have to use an arrow key to move it to the next line to continue wit hthe execution.  This is extremely annoying.  Any idea why maple is beaving like that?

I can get the whole document executed when I use the !!! comand but the cursor ften stays in some command line in the middle of the document instead of the last line.

Also when I have a line of text in between...

Hello,

I'm looking for a way to fit a function to measured data points. The special thing about it is that each data point has an individual error in x- und y- direction, and I would like the fitting command to consider these individual errors. I'm aware of the Statistics[NonlinearFit] command, but there I only can assign one weight per data point - not one for each degree of freedom.

I'm a physics student, and in the moment this is my major problem for using...