Is there any one who knows what is behind of "PlanePlot"? How does it calculates the values below?

Hello :-)

I am trying to solve a third degree polynomial with assumptions, but I do not understand Maple's answers.

I think I am not doing it ''correctly''.

Can someone please help me understand why Maple gives me these answers and how I could get the ones that Maple gives me when I fix a value for my parameter t ? Please have a look at the attached file : test1.mw

I hope my questions are clear, please don't hesitate if you need clarifications.

Thank you very much for your help and your advices.

Why is this integral so difficult -- so slow to execute?

seq(evalf(Int(1/R*sinh(s*coth(1/2*s))^(2*I/k)/(gam-I*k*cosh(s))^5*
     Int(exp(-(k^2*sinh(s)^2/(gam-I*k*cosh(s))-I*k*(1+cosh(s)))*v)*
     hypergeom([1/k*I],[1],k*v*I)*v^n,v = 0 .. 1/2*R), s=0..s_max)), n=0..1);

Hints to improve the efficiency of execution would be appreciated.

The conversion of a maple formula in latex version 2021 produces some

commands which are not defined , see   primes_latex.mw.

Perhaps more informations should be given  in the news about the command latex in Maple 2021

I have a transfer function:

xfer_mag := 1/sqrt((-1.0000 + 1.0772*10^(-14)*f^2)^2 + (1.9665*10^(-20)*f^3 - 3.6181*10^(-6)*f)^2)

if I do:  semiplotplot(20*log[10](xfer_mag),f=10..30e6) I get :

but if I do: plot(20*log[10](xfer_mag), f = 10 .. 0.30e6), and then use the menu options to the right to change the axes properties to Log, I get this:

what is going on here?  why is the magnitude not the same ?

Download demo.mw

Hi everyone,

There is an attached file below. 

I am trying to solve the following equation and I get a numerical value with RootOf.

Do you know if it is possible to get the exact solution with RootOf? Do you know another method? In general, do you know a way to determine if Maple is able to get the exact value or not?

I know it is not always possible to get exact solutions, but maybe there is a way to do it for this polynomial... ? :--)

I hope my questions are clear. Thank you very much for your help and advices. 

test.mw

Hey folks;)

I'm new to Maple and as I tried to export my first document to PDF the plots changed. I tried  everything I could think of but nothing  worked.

All the labels on my plots are now at wrong positions.

I hope you can help me.

...I have to say to that I haven't bought maple yet so that could be a reason to try other progamms.

So thank you for your help    

I solve for a transfer function using Syrup, and want to operate on the Real part and Imagninary parts separately.  I've added "assumes" statements for every variable:  

assume(Rsrc, real);
assume(C1, real);
assume(Lp, real);
assume(C2, real);
assume(f, real);
assume(RL, real);
additionally(0 < Rsrc, 0 < C1, 0 < Lp, 0 < C2, 0 < RL, 0 < f);

When I then do something like :

 
instead of gettting just the real part of the expression, I get :

as if one of the variables was still not assumed to be Real.  I'm not sure where all the '~' are coming from ---is that the issue?

I apologize, I can't insert content for some reason..., although I can add the worksheeet.
pi_filter_osc_anal.mw

I have a function

f(x)=2*2^x-2

g(x)=-1/2x^2+3/2+5

When I plot by, plot(f(x),g(x) - no problem there.

But I need the intersection to continue my task and when trying to do f(x)=g(x) I get x=RootOf... back.

I've tried solve and a lot of other things, can anyone please help?

Thanks in advance

Best

Hello

I need to find all the variants (I am not sure if this is the correct term to be used but I hope this will be clear in the example) of a specific indeterminate in a given expression.  Here is an example:

alpha[3, 5]*xi[1]*xi[8] + alpha[3, 5]*xi[4]*xi[5] + alpha[3, 3]

For this particular example, xi[1], xi[8], xi[4], and xi[5] are the variables I am looking for. The indexes of xi change depending on the previous calculation.  Also, in some cases, I need the alpha variables instead, that is, alpha[3,5], and alpha[3,3].  

I could not figure out how to use indets in this case.

Many thanks for your help. 

I have a question? from the link: https://www.maplesoft.com/applications/view.aspx?SID=5084&view=html

How can we solve equation 2.1 to achieve solution 3.1 with boundary conditions explained in section " 1) Gaussian solution " ?
is this possible with maple?

Download pdsolve.mw

Consider a function for a sample say

operations := proc(A)

local O1, O2, O3, O4, O5, O6, O7, O8;

O1 := A + 2;

O2 := 2*A;

O3 := A^2;

O4 := A mod 2;

O5 := A + 3;

O6 := 3*A;

O7 := A^3;

O8 := A mod 3;

end proc;

First time when I call operations function as operations(3) the output should come in first row

second time when i call the same function as operations(8) the output should come in second row

Similiarly the third time i call in the third row of the rtable.

In generale senario The rtable can contain say k columns based on the number of outputs in that function called.

And each call of the same function the new output is written in a new row.

Finally we should be able to export this rtable to excel.

BAR_CHART.mw

PLOT.mw

I may be misunderstanding the documentation of implicitplot.  Can someone set me straight?

This is extracted from the implicitplot's help page:

implicitplot(-x^2 + y, x = 0 .. 2, y = 0 .. x);

The plotting range is limited to y ≤ x, as intended.  Let us verify that it does the right thing:

display(
	implicitplot(-x^2 + y, x = 0 .. 2, y = 0 .. x, color=red),
	plot(x, x=0..2, color=blue)
);

Yes, indeed it does.

Now let us try limiting the plotting range to y ≤ 1 − x². Here is what we get:

display(
	implicitplot(-x^2 + y, x = 0 .. 2, y = 0 .. 1-x^2, color=red),
	plot(1-x^2, x=0..2, color=blue)
);

I expected the red curve to lie entirely below the blue curve but it doesn't. Am I misunderstanding implicitplot?

Download worksheet: mw.mw