I have a calculation (analytic) involving sums (finite) that ends up with an expression structured like a sum over an expression with several terms, like

sum(Y(t)*cos(omega*t) + a*sin(omega*t)+b*cos(omega*t),t);

(The real case is more involved but this simple example shows the issue.)

What I want is to distribute the sum over each term separately, observing that a & b are numbers & therefore can be pulled out of the sum. Note that the expression...

Hi there,

I am designing a Buck Converter Power Supply, and in that regard I need to design the input filter and compare it to the characteristics of the converter, and for that I need to compare two Bodeplots.

How can I plot the two Bodeplots that I have attached in one?

Thank you

Download converter.mw

Download input_filter.mw

I have problem because mserver.exe stopped working

Yesterday that file was working very well.

help me please

robot-circulo-botone.mw

Hello folks,

I have some code where I need to solve a system of polynomials with 2 equations and 2 variables. I am only interested in Real roots, so I used the Isolate function.

However I would still wish something faster. Then I see what it seems a more specific function called BivariatePolynomial. However when using it, it seems as I don't get proper results. Below it is an example with both functions. Am I doing something wrong?

Isolate method:

How to calculate the integral
restart; int(cos(a*x)*cos(x)^(a-2), x = 0 .. (1/2)*Pi) assuming a>1
with Maple? Mathematica 8.01 produces a very doubtful answer
In[1]:=Assuming[a > 1, Integrate[Cos[a*x]*Cos[x]^(a - 2), {x, 0, Pi}]]
Out[1]=((-1)^a* a* HypergeometricPFQ[{1, 1 - a, 1 + a}, {3/2, a}, 1/2]* Sin[a *[Pi]])/(-1 + a)

Dear Dr. Lopez,

I would like to make a visualization of the following:

y=0.9       0 <= x <=4

y=1-0.1e^(-0.1x)   4<x

z=1

Please help. Thank you very much.

Sincerely,

Giao Che

Hi:

I am trying to use the Physics package to help me deal with non-commuting operators, but having some problems when trying to simplify expressions.The following should explain what i mean:

################

restart:
with(Physics):
# 'a' represents a quantum operator
Physics[Setup](noncommutativeprefix={a}, mathematicalnotation = true);

#we can try to expand to see that a and Dagger(a) do not commute!
expand((2*a+Dagger(a))^2);

Sorry if this is a well-known feature of Maple, but I haven't had much success searching for an answer.

Consider trying to separately solve each of the following two equations for x.

alpha * x + conjugate(alpha) * x = 1 

Maple 15 solves this equation to give x = 1/(alpha + conjugate(alpha)) , as expected.

alpha * x - conjugate(alpha) * x = 1

Maple 15 fails to solve this equation, returning nothing as if there is no solution.

The Li function is defined in Maple as

> FunctionAdvisor(Li, definition)
               [Li(z) = Ei(ln(z)), with no restrictions on (z)]

Special values are known

> FunctionAdvisor(Li, special_values)
Warning: when function identities information is required, only one argument -
the function name - is expected. Extra arguments are being ignored.
          ...

How would you transform a 3D plot structure into a 2D plot structure? I have in mind 1) creating a 3D plot with odeplot or with plot3d, 2) selecting (say) 4 orientations, 3) transforming each into a 2D plot, 4) exporting the 2D plots using the Standard GUI.

The reason behind my question is that the best-looking exported plots that I have been able to obtain with Maple are 2D plots exported as postscript with the Standard GUI. 3D plots don't look nearly as good when...

I have been working on this for a while and Maple Support has been no help.

I have a series of unsimplified questions that I am solving for. I am trying to run it from 0 to 2*Pi and plot that against the value that is calculated for r3. it solves for opposites (positive and negative) and I only want the first set. From there I am unable to have the r3 value assigned as a value and then used for the calculation of r3a (which is just the array name).

here is my code and the errors that occur

I get an error:

/usr/bin/ld: warning: libmaple.so, needed by /usr/local/bin/maple15/bin.IBM_INTEL_LINUX/libmaplec.so, not found (try using -rpath or -rpath-link)
/usr/local/bin/maple15/bin.IBM_INTEL_LINUX/libmaplec.so: undefined reference to `extStartMaple@VERS_1.1'
collect2: ld returned 1 exit status

Even if I try to explicitly add all the maple libs, something goes wrong:

gcc simple.c -I/usr/local/bin/maple15/extern/include ...

The iPad is a very exciting device and it has been gaining broad adoption from our academic and professional customers alike. It was a logical step for us to bring Maple technology to this platform.
 
The Maple Player for iPad is now available in the Apple App Store. It comes bundled with ready-made interactive Maple documents, covering topics like integration, differentiation, computing...

The iPad is a very exciting device and it has been gaining broad adoption from our academic and professional customers alike. It was a logical step for us to bring Maple technology to this platform.
 
The Maple Player for iPad is now available in the Apple App Store. It comes bundled with ready-made interactive Maple documents, covering topics like integration, differentiation, computing...

Three things - one being an possible business opportunity (albeit a small one) for Maplesoft ... ps. sorry for the lengthy talk

updates - Under the Table of Contents in the help Browser I can go to System -> Information -> Updates and find the What's New updates in all versions up to and including the one you're using.  Then at the bottom there are links to further explicit updates to which there are no links in the searchable browser (at least that I could...