I have a function that I want to evaluate to a numerical value.

It has euler's numbers and natural logarithms as well.

The function is defined at h:= x-> expression.

When I call h(value), then it only simplifies and won't produce a numeric value.

What do I do?

Hi!

After a matrix calculation in maple I might end up with a matrix with common factors, like this ...

Now this matrix has elements with common factor that I want put as a factor outside the matrix. How can I do this?

Thanks :)

Hello,

I am reading

http://www.maplesoft.com/support/help/Maple/view.aspx?path=tensor/exterior_prod

and I was wondering : what is the most efficient way to work out basic combinations of bivectors (or trivectors...)

Suppose for instance I have a 4-dimensional space with basis (e1,e2,e3,e4) and I would want to work out

(e_1 -e2+ e3) wedge (e_2-e_4),

how could I do this?

(I just...

Dear All,

maplehelp.mw

I am trying to solve the equation shown in the attached file but can't get the required answer, any suggestions?

I shall be very thankful.

Regards

A.Q

A(n,q) = I(n)*Z(q)/2 * Sum((cos(nwt - qptheta - (n-q)(i-1)2*Pi/3)+cos(nwt + qptheta - (n+q)(i-1)2*Pi/3)),i=1..3)

With n - q = ...-9,-6,-3,0,3,6,9   above equation becomes

Hi!

If I do a*RandomMatrix(2,2), maple will multiply a inside the matrix. How can I have maple keep it outside for readability?

Thanks!

I have written a procedure that creates lists of numbers (for later plotting, but that is irrelevant here). These lists I have programmed as 1-d rtables (Vectors and Arrays). Since I do not know initially how many entries the procedure will generate I am using programmer indexing (with round braces) so the Arrays and Vectors get extended as needed, 1 entry at a time. Basically; I dynamically allocate storage in this way. Maybe not the most efficient way but should work for now.

Hello every one,

I am trying to solve a system of 5 odes numerically but I get an error

"unable to convert to an explicit first-order system".

Please have a look and guide me through the problem.

Thanks

wprob1.mw

Hi, I am creating a plot to demonstrate symmetry about the y=x axis, and I want to show that the line segment connecting two points is the perpedicular bisector of the line y=x. I have plotted y=x, the two points, and the line segment connecting those two points. How do I plot the perpendicular symbol (or right angle symbol) that is connected to the lines and shows that they are indeed perpendicular?

Let A(2 , -2 , 0) B( 4 , 2 , 5 ) & C( -1 , -3 , 0).Find  H(x,y,z) be the orthocentre of the triangle ABC.

Hello, everyone.

How to plot 

plot(-(2*(e-1))*exp(-3*x)/exp(-3)+(3*e-2)*exp(-3*x)*x/exp(-3)) 

this function is the answer of ODE: 

ode1c := diff(f(x), x, x)+6*(diff(f(x), x))+9*f(x)

ics := f(1) = exp(1), (D(f))(1) = -2

I got a warnning : "

Warning, unable to evaluate the function to numeric values in the region; see the plotting command's help page to ensure the calling sequence is correct

Hi there!

I want to  plot phase portraits of this fractional system in maple please help me.

                          (alpha_1)
                        ...

I want to make a triangle with its sides: 3, 4, 5. My code can not  run. Please help me. 

> restart:

ListTools[Categorize]:

N:=10:

L:=[]:

for x1 to N do

for y1 from x1 to N do

for z1 from y1 to N do

for x2 to N do

for y2 to N do

I created a triangle whose length of the medians are integral numbers. Please comment to me about my code.

> resrart:

ListTools[Categorize]:

N:=5:

L:=[]:

for x1 from -N to N do

for y1 from x1 to N do

for z1 from y1 to N do

for x2 from -N to N do

for y2 from -N to N do