Hello

Does anybody hasa suggest how to quickly get the "initial conditons" of a (control) loop in MapleSim ?

When I'm debugging loops in MaplSim I'm missing a way to get the inital conditions and then to be able to see the (first) numerical values in each probe or on the "wires/ports".

Does something like this exit, or is it to be pushed on the "suggestion" list.

This applies also to PDE resolutions, the "get Initial Condition" run is a good trick to first check your model before running it.

Hi there,

Good Morning,

Would anybody be kind to help me with the attached worksheet. Most of the worksheet worked except for the last procedure where I was trying to call a procedure called cog that output the center of gravity of a concrete block xyzc in another procedure called Inertia. Please, how do I acheived this in Maple.

Regards

Moses

Hello

I want to mae a single output block custom for a signal generator , my function is a couple of pages of Maple calcuations, but easy to put inside a proc(time) ... end proc how to generate this. Your Real block does not allow me to type all y code. Making it from scratch from your embedded functions  with connections lines is possible, but a hell of a work, while its all there in Maple

 

thanks in advance

Ivar

 

Hello

Is there a way to change globally all time horizontal axis limits in one go ? I have to define each time each of my 12 probe signals, parameter by parameter, axis by axis, even if I'm using the same values.

Im missing in the right "parameter plot" window a way to define globally the time interval for all plots, and not necesarily the time interval of the full simulations, in particular to leave the system stabilise and get rid of the initial peaks and oscillations.

I regularly choose a function for my numerical analysis class that looks bad (i.e., has jumps) when graphed on a small domain.  For example,

plot(ln(1+x), x = -10^(-15) .. 10^(-15))

If I increase Digits or use a Taylor series to replace ln(1+x), the graph looks fine.

I tried this with cos(x) - x as follows:

plot(cos(x)-x, x = -10^(-16) .. 10^(-16))

Hello,

I have an equation which is   Y=A*x^3 +B*x.     Y=-60..60  and  x=-1..1

How can I find the A and B parameters using Maple?

thanks

Bengu

So MapleSoft has sold out to a Japanese engineering company. I have lost all hope that the company will ever care about mathematicians again.

It used to. But for years it has all been about engineering. The new features that mathematicians care about get fewer every year. All R&D seems to be on the MapleSim, Matlab integration etc or interface.

<p>I have the following code:</p>
<p> </p>
<p> for D5d_counter from 1 to 1000 do<br />
increment := 0.1:<br />
D5d_incr := initial_D5d + increment:<br />
D5d_decr := initial_D5d - increment:<br />
energy_D5d_init := energy1d(initial_D5d);<br />
energy_D5d_incr:= energy1d(D5d_incr);<br />
energy_D5d_decr := energy1d(D5d_decr);<br />
#evalM(cat("plot(",convert(P[1],string), ",",convert(P[2],string), ", '+')"))</p>

I have always wanted to know why the lognormal distribution in the Black & Scholes (BS) option pricing model

is assumed to have a mean of  T*(r-0.5*sigma^2 ) . I have seen various explanation but non that make any sense.

I know that the mean in a lognormal distribution is exp(u+0.5*sigma^2) but why does it suddenly become

T*(r-0.5*sigma^2 ) in the BS model ?   I can understand the T = mean proportional to the time increament but why does

How can I extract the order of a number in a list?

e.g.

L:=[1,3,5,8,9];

Order(3)=2

Order(9)=5

Hi,

Reading about the "Table of Chords" of Ptolemy, I stumbled on something I thought should be easy in Maple.

For example, in the table, I have that the chord length  for 1/2 degrees (with radius 60 of course) = 0;31,25 wiich mean 0+31/60+25/(60)^2=377/720=0.52361.

What I would like to do in Maple is evalf[6](sin(1/2 degree))=0.008728 and then convert the decimal part of the answer into a list so I can do

How do I define a large multivariate polynomial

For all i, j, k, l, m, n from 1 to 2

         sum t = 0 to 7: x_{i,j, t} * y_{k,l, t} * z_{m,n, t}

in maple?

 

Hello,

I'm new to maple's datastructures. Is it possible to store some rather complicated data in the nodes (or leafs) of a n-nary Tree? Are there also B-Trees?

How do I complete the following by using row reduction rules.

3x            -z=-1

4x     -y    -2z =-5

2x +  7y  + 9z = 0