## smartplot vs implicitplot...

Dif_Out_plot.mwWhy this difference in the results of the graphics?There are differences between the command smartplot and the command smartplot implicitplot, to display the graph of the function.Following the line of site: web

## Getting an error with a commutator/algebra rule...

Hi,

iam trying to define a commutator rule (using the Physics package) but iam getting an error i do  not understand.

I have (quantum) operators like this: Aij  i and j are numbers from 0 to 3

The commutator relation i want to define is: [Aij,Akl] = Ailδjk - Akjδil

My worksheet looks like this:

## ODE with events...

HI,is it possible to solve the ODE system (that I have uploaded) by adding events at a certain timestep, instead of reformulating the system for each step.The ODE system expresses two coupled movements y(t) and X(t). The current position of y(t) is controlled by a parameter which depends on values calculated in the previous step, while changing the sign for each step.Thank you!

## Error in executing my function...

Hi every one

I'm new to maple programming so my question might be boring. I'm trying to solve the higher order kernel generation function which appears in B. Hansen (Econometric Theory, 2005). The quation is

## Caused by Global variable?...

#### Code attached at the BOTTOM ####

If I run these seperately, they seem to be running fine as shown above. But when I run '8' after '7', it does not seem to be working as in first picture.

## I am really struggling with this subs thing!...

Working.mw

This one is wokring fine.

However,

See the new worksheet: testP.mw

with the source code: tmP.c

######################################################################...

## Inverse of a piecewise function...

I try to make the inverse of a one to one piecewise function, but the solve command gives a function of lists. How can I avoid this?

`restart;f := x -> piecewise( x<=1, (x-1)/2, x<2, -3*(x-1)+3, 2*(x-2)+3 ):solve( f(x)=y, x ): g := unapply(%,y): lprint(g(x));piecewise(x <= 0, [1+2*x], x < 3, [2-(1/3)*x], 3 <= x, [1/2+(1/2)*x])`

## How to view the code that controls embedded compon...

How does one view the Maple code that controls embedded components in a worksheet? I've looked at every menu on the toolbar and every context menu I could find, but nothing seems to fit.

## Error Message in Maple Code...

I got the following error message when trying to execute a maple code:

"invalid character in short integer encoding 69 E"

I can't find anything about it in the maple documentation, does anyone have any idea what it means?

Thanks.

## What could possibly be the problem?...

Hi all,

I am running xmaple via linux, version 17.

This is on a Unbuntu OS X64 with i7 940X, and 4G RAM.

Casper

## How do I solve a set of ODE's, where the IC's of t...

Hello, I'm currently trying to solve this set of ODE's, but the way I have formulated the problem seems to be hard to process. Is there any simpler way of doing this, because it takes Maple a few minutes to solve 10 steps and I need more than a 100.Thank you in advance!l := 1.34*.75;Omega[p] := sqrt(g/l);v := .75;f[p] := .35*v^3-1.59*v^2+2.93*v;bmin := 0.157e-1;ci0 := y1(0) = 0, (D(y1))(0) = v;u0 := 0+v/Omega[p]+(-1)^0*bmin;p1 := diff(y1(t), t, t)+Omega[p]^2*(u0-y1(t)) = 0;k[1...

## Maple really slow (or unable) to calculate Jacobia...

Hi all,

For research purposes, I have symbolic matrices of dimentions up to 100 x 50 (and above) with certain number of parameters. Then giving random value to those paramters, I want the numerical rank of the matrices.

Maple 17 does not seem to work well with symbolic ranks, where expentials are involved.

And more to it, both

Student[MultivariateCalculus][Jacobian]

and

VectorCalculus[Jacobian]

does not seem to work. ...