Thank you Acer

Wiht your help, I realize that I should use the unit "lbf" because they talk about pound-force, wich is not the same to poundal.

In Wikipedia, I read that: «The pound or pound-force (symbol: lb, lb_f, or lbf) is a unit of force used in some systems of measurement including English engineering units and the British Gravitational System.»

So in Maple, 1 lbf = 4.44822 N and 1 N = 7.233 poundal.  And sice it is a course in engineering given in the US, i should take lbf wich was abbreviate in the course ot simply lb.

Do you agree?

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Mario Lemelin

Maple 2015 Ubuntu 14.04 - 64 bits
Maple 2015 Win 7 -  64 bits
messagerie : mario.lemelin@cgocable.ca
téléphone :  (819) 376-0987

@ecterrab 

Thank you very much for this response.  And thank you for the *.mw file.  Always appreciated.

Mario

Thank you Markiyan Hirnyk for that post.  I have done that competition 2 times.  It was for me hard but fun to do.  I will go back to the site.

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Mario Lemelin

Maple 18 Ubuntu 13.10 - 64 bits
Maple 18 Win 7 -  64 bits
messagerie : mario.lemelin@cgocable.ca
téléphone :  (819) 376-0987

@ecterrab 

I can wait to see what you will add.  For the moment, I will look into the ?Physics,examples.  It is a good start there.

@Andriy 

Thank you very much.  It is what I was looking for.   And with the file answer,mw, I will be easier to pratice.  It surprise me a little bit that many commands are quite long.  But at least, it is a beginning.

I appreciate what you gave to me as answer.  Since I am with M18, I will use the solution of Markiyan Hirnyk.

You solve my problem.  But it is quite a long command.  I would have thought that a simple rand(-1..1) would be enough.  Maybe a randomize at the beginning.  But for the moment, this will do fine.

Thank you again.

--------------------------------------
Mario Lemelin

Maple 18 Ubuntu 13.10 - 64 bits
Maple 18 Win 7 -  64 bits
messagerie : mario.lemelin@cgocable.ca
téléphone :  (819) 376-0987

for me, it is a bug that should be corrected.  Thank you for the trick.

--------------------------------------
Mario Lemelin

Maple 18 Ubuntu 13.10 - 64 bits
Maple 18 Win 7 -  64 bits
messagerie : mario.lemelin@cgocable.ca
téléphone :  (819) 376-0987

But I will have to make an important suggestion that in the contextual menu, I should have the choice between absolute or relative conversion.  Since the clickable facilities is a plus for Maple, I don't want to be obliged to use the long form of convert(43,temperature,degC,degF).  Quite unpracticle in a clickasble view.

But thank you acer for the clear explanation.

Regards,

--------------------------------------
Mario Lemelin

Maple 18 Ubuntu 13.10 - 64 bits
Maple 18 Win 7 -  64 bits
messagerie : mario.lemelin@cgocable.ca
téléphone :  (819) 376-0987

@acer 

Than you very much for those codes.  Already, the first one was exactly it.

Thank you, thank you acer.

First one:

and the second one is:

--------------------------------------
Mario Lemelin

Maple 18 Ubuntu 13.10 - 64 bits
Maple 18 Win 7 -  64 bits
messagerie : mario.lemelin@cgocable.ca
téléphone :  (819) 376-0987

@Carl Love 

The code I posted is actually the right one.  Of  course, the varible  must be replace par t.  This is what I got:

when you look in front of it.  But when you look from a upper vieu, you get:

Wich is not a circle.

Is you plot in 3D is the sme?

@Preben Alsholm 

Yes, in P3, the upper limit is really L.  Sorry for that inconvenience.

That what happen when you cannot edit your post.

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Mario Lemelin

Maple 18 Ubuntu 13.10 - 64 bits
Maple 18 Win 7 -  64 bits
messagerie : mario.lemelin@cgocable.ca
téléphone :  (819) 376-0987

I have a function:

And I want to express it this way:

where

I express this function in a complex wave:

with

and

I want to calculate the probability of P(m=3), so I need to do

And that is the integral that Maple don't do:  But if you look carefull to the integrand, you have that

when muiltiply permit me to write it this way

and you get that

and  

If I made a theoritical mistake, pleas correct me.

Thank you in advance for your helpé

--------------------------------------
Mario Lemelin

Maple 18 Ubuntu 13.10 - 64 bits
Maple 18 Win 7 -  64 bits
messagerie : mario.lemelin@cgocable.ca
téléphone :  (819) 376-0987

@acer 

Thank you for this quick response Acer