Define a piecewise function of  so that the the value of the function is  if  or if , it is equal to the vertical distance between the curves if . Numerically integrate the area under this curve on the non-zero interval and explain how the numerical answer is what you would anticipate the answer to be given that this curve is related to semi-circles.

The curve is defined by

Hi everyone,

Was hoping someone could point me in the right direction. A homework question asks us to create a function using arrow (->) notation which take a Maple list of complex numbers as its input and returns the largest modulus from that list.

I've tried writing this without arrow notation --

Say L1 is a list of complex numbers:

max(abs~(L1))

and this seems to work fine. But I'm particularly struggling with how to introduce the arrow notation into this.

Any help would be much appreciated!

Hi. Can anyone help me with this error, it says 

Error, (in unknown) cannot evaluate the solution past the initial point, problem may be complex, initially singular or improperly set up

Download Darcy.mw

Below are five subsindets commands.

I believe I understand the actions of B and C, but I fail to understand the actions, individually and taken together, of  E, F and G.

B := subsindets(u(i, j)^2*v(i, j)+u(i-1, j), 'specfunc(u)', proc (f) options operator, arrow; subsop(1 = op(1, f)+1, f) end proc);

C := subsindets(u(i, j)^2*v(i, j)+u(i-1, j), 'specfunc(anything, u)', proc (f) options operator, arrow; subsop(1 = op(1, f)+1, f) end proc);

E := subsindets(u(i, j)^2*v(i, j)+u(i-1, j), 'specfunc(symbol, u)', proc (f) options operator, arrow; subsop(1 = op(1, f)+1, f) end proc);

F := subsindets(u(i, j)^2*v(i, j)+u(i-1, j), 'specfunc(`+`, u)', proc (f) options operator, arrow; subsop(1 = op(1, f)+1, f) end proc);

G := subsindets(u(i, j)^2*v(i, j)+u(i-1, j), 'specfunc({`+`, symbol}, u)', proc (f) options operator, arrow; subsop(1 = op(1, f)+1, f) end proc);

Where can I find a thorough explanation of specfunc with examples?

Hi,

I am looking for a function which gives me the name of a variable. Something like NameOf :

-------------------

x:=1;

y:=Array(1..2);

NameOf(x);

"x"

Nameof(y);

"y"

-----------------------------------

It must be standard but I am very new to Maple...

Thanks,

{R = 7.339698158, S = 2.378491488, W = 2.512047349}

if i have thes set as aresult of multibull equations by using fsolve how to say to maple assign the value of R to another parameter say X and the value of S to Y and so on ???

please help

Any one can help me to convert matlab codes to maple.Matlab_code.mw
 

Download Matlab_code.mw

i am attaching the codes and file. i will be thankful to you .

When I solve in worksheet mode the limit of (2*abs(x-2)+abs(x+1)-3)/(abs(x^2-4)+x-2) evaluating the limit in x=2- the result is 1/3 and in x=2+ the result is 3/5, but if I try to use the Tutorial/Single Variable/Limits, an error occurs.

Any Suggestion?

Hi all,

can some one please help me check the  mapple file.AZIZ.mw i copied from the the paper by abdul Aziz with reference [doi:10.1016/j.cnsns.2008.05.003] .

Thank you for your help

I want to find general formulas of the sequence satifies:
f(1) = 1, f(n+1) = 1/2*(f(n)+9/f(n))
I tried 
restart;
rsolve({f(1) = 1, f(n+1) = 1/2*(f(n)+9/f(n))}, {f})
I got the answer
3*coth((1/2)*arccoth(1/3)*2^n)

How to get the form (-3*2^(2^(-1+n))+3*(-1)^(1+2^(-1+n)))/(-2^(2^(-1+n))+1)?

Hi MaplePrimes,

I want to find the arithmetic mean of all radius from ellipse sector.

Let me explain: I want the average radius of the interval in red
on the ellipse that is between the two radios

restart;
with(inttrans);
[addtable, fourier, fouriercos, fouriersin, hankel, hilbert, 

  invfourier, invhilbert, invlaplace, invmellin, laplace, mellin, 

  savetable]
laplace((diff(Dirac(t), t))*cos(t), t, s);
                               0
int((diff(Dirac(t), t))*exp(-s*t)*cos(t), t = 0 .. infinity);
                              1  
                              - s
                              2  
 

Hello,

   What is the best way to create and save a library file with things like constants, procs, etc.

My work domain is the physical atmosphere and get tired of calling the many different scientific packs, copying over standard variables, running initition procs to start a new work book.

I'd like a worksheet, or library that has the ~10-20 basic scientific properties of dry air, most air, the reynolds calcs as a proc, etc.   A second call would be to standard material props lib used in our aero business.

I have not yet used Maple library tools to create a library and the initial documentation is a bit thin about differences and best practices.  I have tried to put this into the startup code section but then it's copy paste from file to file.  The best would be to load the file that is maintianed in one location, but used by many worksheet/docs.

I'd like to just have a basic "Initiate proc()" that would call a lib, or multiple lib/packages data to set all my globals, establish my physical prorperties, set the units system, etc.  upon opening and file initialization.   

I am also confused about "lib", ".M", ".mla" differences and modules versus libraries.   I do think I understand packages as sort of a proc library - just called packages ??   am I correct.  I have never tried to create or establish one. 

The issue for me with packages vs lib, modules and some confusion on the method procedures to set them up and get them properly instantiated when called.. 

So, do these lib, packages, modules have instantiation / initiation specifics to make them available when creating the package/lib  to use the with() command? 

I tried save and read with limited success.

Any recomendations welcome.  The last time I created libs was in C.  

Sorry if this is possibly confusing the different methods.  Is there a really good book/tutorial on file management, especially libraries, proc, module definition and storage benefits.  Best practices for maple?

Regards,

Bill

how I can find an non-trial solution (non-zero) for differential equations?

Thanks

y.mw
 

Download y.mw