lemelinm

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19 years, 199 days

 

 

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Mario Lemelin
Maple 14.00 Win 7 64 bits
Maple 14.00 Ubuntu 10,04 64 bits
messagerie : mario.lemelin@cgocable.ca téléphone :  (819) 376-0987

MaplePrimes Activity


These are questions asked by lemelinm

>(solve(0 < M^2 - 4*m^2, M) assuming (0 < M, 0 < m))

>with(plots):

>inequal(0 < M^2 - 4*m^2, M > 2*m, m = 1 .. 5)

I know that it won't work:

Error, (in plots:-inequal) invalid input: Plot:-Inequality expects its 2nd argument, r1, to be of type name = range(And(realcons, Not(infinity))), but received 2*m < M

I even try

>inequal(0 < M^2 - 4*m^2, m = 1 .. 5, 2*m < M)

But is it possible to do it another way. Could it be an added functionality.

Of course, if I write values like this:

>inequal(0 < M^2 - 4*m^2, m = 1 .. 5, M = 2 .. 10)

I get a plot, a triangle.

 

Here are the inputs and output:

Why is it not possible to simplify the meter and the second (which are units).  If I do "simplify(pmin), the unit MeV becomes J and that is not what I want.  Simply said, is Maplesoft planning to include particle physics where c = h = 1 in the future version of the package "Physics"?

Until that happens, does someone knows how to give the answer in MeV/c.  The preceding problem was asking the mass of a particle in MeV/c^2.

Thank you in advance for your trouble.

Mario Lemelin

Hello everyone,

I need to expand this:

>abs(u+v)^2+abs(u-v)^2

so I have as a final expressioin

>|u|^2+|v|^2=1

This is the property that has to be true so the probability is one.

>assume(u::complex, v::complex);  does not work and the simple commande

>expand() neither.  Any idea?

I would like to see the list of metrics recognize by Maple with their acornym.  For example,:

>Setup(coordinates = spherical, metric = kerr)

Hello,

I was wondering if it is possible to use units in Maple so I can always check if the result I have at the end of calculation is the meter.  For example:

>c:=3e8m/s
>Ec:=1J
>Ec*c

The answer is of course 3.10^8 m^3*kg/s^3

I try to do something with the units but I am unable to crreate something that will simplify the m/s ffactor to 1.

Any idea?

Thank you in advance for your help.

 

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