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The "." notation for the dot product of Vectors is very convenient and intuitive.  For example:

> <1,2,3> . <1,1,1>;

6

One sometimes annoying feature of it, however, is that by default Maple is using a dot product (suitable for Vectors with complex scalars) that is conjugate-linear in the first argument.  But let's say you will only be working with real scalars.  There's no problem if your Vectors have numeric entries, but...

ex:

for N=4

Hi there,

I am working on a Maple sheet where I've been doing all the calculations with units. The problem is that I now want to get the product of a "seq" "R_DC_total-sek" and multiply it by the sequence R_AC_total-sek. But how do I do that? I've tried changing them into lists, but since one of the lists have units and the other one do not, Maple does not multiply the two lists, but just prints them.

I've uploaded the sheet here:

http://www.2shared.com/file/4sUmrdn0/EFD_N87_10_5_3...

Defined a demand function:

x:=(p,w)->w/(p[1]+p[2]+p[3])*Vector([p[2]/p[1],p[3]/p[2],p[1],p[3]])

The Slutsky Matrix is calculated as Dpx(p,w) + Dwx(p,w) x(p,w)^T with Dpx(p,w) = Jacobian for p1, p2, p3 and Dwx(p,w) is a column vector of the derivate of x1, x2, x3 in respect to w.

Step by step:

Dxp := Jacobian(x(p,w),[p[1],p[2],p[3]])

yields the correct Jacobian.

For Dwx I've tried several different methods, i.e.

Dwx := Jacobian(x(p,w),[w...

Maple T.A.  7 and Maple T.A. MAA Placement Test Suite 7 are now available.

Maple T.A. 7 provides new options for analyzing grades and gaining a deep understanding of how students are performing, including:

• Instructors can view all responses to an assignment question, to easily look for patterns
• The grading scheme for the entire course can be defined inside Maple T.A., with appropriate weightings and flexible policies for dealing with missed, repeated, and worst assignments...

Hi e-friends,

I want to minimize a function subject to a set of S restrictions.

The restrictions are related to matrices V, W, X and Y:

V = [v1, .., vS]  order L x S

W = [w1, .., wS] order L x S

X = [x1, .., xS]  order LxS

Y = [y11,.. yS] order L x S

How may I write in MAPLE in compact form  the following S inequalities (for any arbitrary integers L and S)?. ...

Maple does not find the product
product((k+a)*(k+b)/((k+c)*(k+d)), k = 1 .. infinity) assuming a > 0, b > 0, c > 0, d > 0, a+b = c+d;

                         GAMMA(c) GAMMA(d) infinity
                         ----------------------------------

After fixing the problem outlined in a previous post, I seem to get another error that I can't explain. 

"Error, (in int) wrong number (or type) of arguments" is the product of defining a function 'u(r,theta,t)' and then defining each of its components. 

I've attached the file here as well. Could someone help with troubleshooting? MapleMem5.mw

I just wanted to let everyone know that we recently added some interesting new packages to the Application Center. These packages had been available as third party products. Now, the authors have chosen to make these products freely available to the community through the App Center. Follow the links below to take a look.

Harmonic Analysis

Structural Mechanics

Quaternions

FuzzySets

A new edition of The Mathematics Survival Kit – Maple Edition is now available.  It contains 25 new topics, which were created in response to requests from readers of the first edition of the book. New materials range from basic operations such as factoring and fractions, to graph sketching, vectors, and integration.

The Math Survival Kit gives students the opportunity to review exactly the concept or technique they are stuck on, learn what they need to know,...

A new version of the Maple T.A. MAA Placement Test Suite is now available.  The latest release includes a new Calculus Concepts Readiness Test, based on modern research into calculus assessment. It also includes performance improvements when dealing with large student populations, and tools for integration with Moodle™ and other course management systems. To learn more, visit What’s New in PTS 6

This tip comes care of Dr. Michael Monagan at Simon Fraser University. Represent your sparse matrix as a list of rows, and represent each row as a linear equation in an indexed name. For example:

A := [[1,0,3],[2,0,0],[0,4,5]];

S := [ 1*x[1] + 3*x[3], 2*x[1], 4*x[2]+5*x[3] ];

To compute the product of the matrix A with a Vector X, assign x[i] := V[i] and evaluate. This can be done inside of a procedure because x is a table.

V := [7,8,9]: for i to 3 do x[i...