maple_error.doc

Hello,

I have a plane x+2*y+3*z = 0 and a point A(1,2,3).

From A there are 3 lines :

P := (1, 2, 3) P1 := (-1, -1, 0) L1 := P+t*(P1-P)

How to find the cutting points between L1 and the above plane?

How to find a cutting points between planes? 2 3 4 planes etc.

It is urgent, please help me!

How do you map b into a to get [[a1,a2,b1],[a3,a4,b2],[a5,a6,b3]]

a:=[[a1,a2],[a3,a4],[a5,a6]]
b:=[b1,b2,b3]

Hello Colleagues:
I have tried to develop in Maple as shown in the following Gif.

What I've achieved is these few lines of commands:

I have the following script 

Download display_plot_-plot_s.mw

, where i tried to import two collumns of data from excel, what am i suppose to put after "display" to obtain the plot?

How do I evaluate moments of Q4 in a reasonable time with a reasonable accuracy, i.e. to a few decimal points:
   
with(Statistics): RV := 'RandomVariable(Geometric(1/3))+1'; R := `$`('RV', 5);

Q4 := 1/(alpha*R[1]+alpha^2*R[2]+alpha^3*R[3]+(1-alpha-alpha^2-alpha^3)*R[4]);

Moment(Q4, 1);

E.g., can I tell maple that replacing infinite series underlying this calculation with sufficiently long partial sums is okay with me? Or maybe there...

Hi friends,

I have windows 7, 64 bits, and I upgraded my maple to 64-bits version as well (Maple 13.02). But I wonder why in the task manager of windows, maple is still tagged as a 32 bits application (e.g. "maple.exe *32"  and  "mserver.exe *32")? In fact, I think the reason that I cannot run one my maple projects, which needs more than 2GB RAM, comes from this issue. Could you help me resolve the problem?

Thank you!

Hi all!

I would like to isolate a variable from an equation but after trying both solve and isolate I noticed they result in two different solutions. Which one is correct or in other words are there any issues with my syntax resulting in these differences?

To my mind I did all the necessary assumptions, to avoid that the summand will become singular when calculating the expected value.

What did I do wrong?

Here´s the code:

with(Statistics):
interface(showassumed=0):
assume(t::posint):
assume(x::posint):
assume(0 < q, q < 1):
X1 := RandomVariable(Geometric(q)):
DARA := t->log(t):
ExpectedValue(DARA(X1));

I have difficulty resolving this problem. G(t) is the population after t years.

G(t) = (10, 000)/(1+24*e^(-1.2*t))

I am stock with the first derivative.

288000e^-1.2t / (1 + 24e^-1.2t)^2

Hi everyone;

I would like to solve these ODE's.

1) d/dX(X*dΘ/dX)+ρ^2*X*Θ=0;Θ=Θ(X),ρ=constant

2)d/dr(r*d/dr(φ)-m^2(r*φ-n/m^2)=0;φ=φ(r),m,n=constant

Boundry Conditions are:

1)d/dX(Θ(L))=0,  2)Θ(0)=φ(R), 3)d/dX (Θ(0))+d/dr(φ(R))=0, 4)d/dr(φ(0))=0,   R,L=constant

Two of boundry conditions are Joint

Thanks

I'm using Maple 14 on 4-way and 6-way AMD 64 hardware running Windows Vista to numerically estimate inverses of a cumulative distribution function at hundreds of points, and am using the Task model to assign each point's inverse computation to a separate task. The cdf is a weighted sum of thousands of simpler functions, and so each task needs the weights. Initially I had set these up as a global variable, but after reading Darin Ohashi's MaplePrime's post ...

Hi all!

solve({q[R1] >= 0, q[S] >= 0, `d&Pi;`[R1] = 0}, q[R1])

This command gives me a piecewise solution, showing somewhat like:

[] q[S] < 0.13...

[{q[R1] = ...(q[S])   }] q[S] => 0.13...

Is there some way to define that part of this piecewise function for which q[S]=>0.13 as a seperate function? I need to do some more work on q[R1...

Hello there,

so i have a maple algorithms which produces about a thousand set of results. The algorithms produces about 7 values.. and this is iterated about 100 times.

Is there any way I could transfer all these values into a spreadsheet?

basically I want to end up with a speadsheet with the values from each iteration forming a row.

Thanks in advance!

How to flatten a list without ListTools? Thanks.