Math Forum / Math Software / Maple / October 2008

Suppose I would like to plot the function x^a for a few values of a,
say a=1,2,...,10. How would I do this?
I'd like a simple expression of the kind:
plot(x^a, x=0..100, a=[1,2])

The solution of the equation a*x=0, where a and x are scalars,
depends on the value of the coefficient a.  If a is nonzero,
then x=0 is the only solution.  If a is zero, then any x is a
solution.

MeijerG[{{1}, {5/4, 7/4}}, {{1/2, 1, 1}, {}}, 1]
                      ?
Best wishes,
Vladimir Bondarenko

I am using geom3d to get the equation of a line in 3D space, but I am getting
some weird results.
The line is defined using two points in 3D space:

MeijerG[{{-1, -1/2, 0}, {}}, {{-5/4, 0}, {-3/4}}, 1]
                        +
MeijerG[{{-1, -1/2, 0}, {}}, {{-3/4, 0}, {-5/4}}, 1]
                        ?

I have the sequence of commands:
A := matrix(2, 2, [a1, 0, 0, a2]);
B := matrix(2, 1, [exp(a1*t), exp(a2*t)]);
Mc := augment(B, A&*B);

............................................................
FourierTransform[Cosh[z], z, s]
0
............................................................

I have the following data for density (gm/cm^3) as a function of sun's radius
r/R:
listeD:=[[0,160],[0.04,141],[0.1,89],[0.2,41],[0.3,13.3],[0.4,3.6],[0.5,1],[0.6,
0.35],[0.7,0.08],[0.8,0.018],[0.9,0.02],[0.95,0.004],[0.99,0.00005],[0.995,0.000

Under Maple Help is the "Ten Minute Tour".  The first example is "2/3 + 3/7"
it instructs "place the cursor on top of the fraction and press Ctrl+= to
compute the value of the fraction".  If I do that on the example it works.
Then I click down to the clear area below, switch from ...

On maple 7.0, my version for the indefinite future,
simplify(sqrt(4248728067)) as well as radsimp(sqrt(4248728067)) and
simplify(sqrt(4248728067),symbolic) all produce no simplification.  I
would have expected the result 37633*sqrt(3).  Is there a way to get

Is it possible to evaluate, with Maple, the limit of a multivariable
function ?
For instance, let the mapping :
f : R² --> R, with :  f(x) = xy²/(x² + y) if x \neq 0 and f(x) = 0 if x =0.

I have Maple 11.0. I met a wield problem just now.
After I put following expression to the math sheet: (exp(-x)-1)
(exp(x)-1)/(exp(-x)-exp(x))
It gave me : ((exp(-x))(exp(x)-1)-1)/(exp(-x)-exp(x))

I am trying to visualize what looks like a particular polyhedron(?), but I am
having a bout of stupidity and cannot figure something simple about it.
I am describing the shape, section-wise:
Consider the unit circle on the xy-plane. Put vertexes at exp(2*k*Pi/8*i), k \in

I have a set of 2 equations that can be easily solved by hand but when
I try to use "Maple solve" to solve it, no solution is shown.
Here is the system:
2/(x+1)-4/(y-3) = -12/(x+1)(y-3)

How can one make Maple do simple things without going
to devices which should not be needed?
The precise situation was that Maple was asked to
differentiate