## Using Scientific Constants...

I'm trying to use the scientific constants package to evaluate the product of certain constants.

What I'm trying to calculate is the value

(mu*e^(4)/(2*hbar^2), where mu is the reduced mass of the electron and proton, and hbar is Plancks's Constant divided by 2*Pi.

This is for a Quantum Mechanics problem where I'm supposed to show for the large quantum number limit, i.e. large n, this angular frequency approaches values for the classical angular frequency of an ordinary rotating object.

## trouble with MultiSeries: series resp asympt for E...

I want the asymptotics for EllipticF(z,k) w.r.t. z (yes, not k).

My example is F:=I*EllipticF(c*I/x,k), c=2-2^(1/2),k=3+2*2^(1/2)
and I want the limit x ---> 0+.

MultiSeries:-limit(E,x=0);

results in 0.54... + 0.54...*I (real = imag, positive value).

MultiSeries:-series(E,x,3);

gives (after clearing the output) the same for setting x=0.

For Numerics my setting is Digits:=24 and eps:=1/10^18.

subs(c=2-2^(1/2), k=3+2*2^(1/2), F...

## Mapping a function of two variables...

Hello,

I have a question on the efficient usage of map command.

Suppose I have a function of two variables:

a:=(x,y)->sin(x)*cos(y)

I would like to evaluate the function using fixed values of x and y (i.e. grid search problem):

f:=x->x*Pi/180

X:=f(<seq(0..360,45)>)

Y:=f(<seq(0..360,60)>)

## Plotting a regression line from data points in the...

Hi guys. I have a sets of N data points in the form [x_component(1), y_component(1)], [x_component(2), y_component(2)], ... [x_component(N), y_component(N)] that I want to plot as points and draw the regression line through them. I know how to plot the regression line with the data points in the form [x_component(1), x_component(2), ..., x_component(N)] and [y_component(1), y_component(2), ..., y_component(N)] So my question is how to isolate all the x components and all the y components from my data points?

## Help File...

Hi,

How can I create a help file in maple for a user function ?

Thanks
Krian

## Graphic User Interface - Maple v12...

How do I get rid of the right-hand pallete dock ?

## Summation of function with "if" in definition seem...

Hello,

this problem has been bugging me for months. I am defining functions with "if" in their definition.  These functions seem to be well defined, without any problem. Then I do sum and something goes wrong.  I have tried to isolate the problem to give you an example:

## Significant digits...

Hello, I am new to Maple, and I have a novice question on rounding with evalf function.

I have an expression:

m:=(x,y)->126*cos(a)^2*(cos(x)-sin(x)*cos(y+b+c)*tan(a))-42;

Then I set some parameters as constants:

g:=x->x*Pi/180;

a:=g(58); b:=g(-45); c:=g(100);

## solving numerical differential equation...

Hi Friends,

May I know How do I solve numerical differntial equation in MAPLE 12..?

Thanks

With Regards

Selva

## Splitting a function into multiple varriables......

Is it possiobe til split a function into multiple varriables? I have seen something like this is a maple function "tools->assistants->backsolver".

Does anyone have a clue how thats done? I need it to my dynamic function ^^

/Simon Johansen

## How can I assign the numerical solutions of dsolve...

Hi,

How can I write a command that the Maple assigns the numerical solutions of the dsolve command in a procedure such as the simple following procedure?

## Worksheet crashing my system...

Maple solves the 4 equations for the 4 unknown, although I eventually need to end up with just the real part. Maybe I am doing something wrong. Once I get to the bottom of this worksheet and begin to try to extract (ie copy) each A1, A2, B1, B2, it freezes, my system stops functioning, to the point where I have to shut it down and restart it. Trying a few times, I see that, once I load this worksheet in, and begin at restart, once it does the last calculation, if I right click

## Labeling Axis...

Maple generates the values (numbers) for axis labeling automatically, e. g. 3.5   10E-3 for 3.5 meters. If I want to label the axis manually with millimeters, how can I fit the automatically generated numers to the manual given unit?

## Where is the second solution?...

Assume n is positive integer.

dsolve((1-x^2)*(diff(y(x), x, x))-2*x*(diff(y(x), x))+(n*(1+n)-n^2/(1-x^2))*y(x), y(x))

Maple says

y(x) = _C1*LegendreP(n, n, x)+_C2*LegendreQ(n, n, x)

However

dsolve((1-x^2)*(diff(y(x), x, x))-2*x*(diff(y(x), x))+(n*(1+n)-n^2/(1-x^2))*y(x), y(x), 'formal_solution', 'coeffs' = 'mhypergeom')

Maple says

y(x) = _C1*(Sum((-1)^(2*_n1)*GAMMA(_n1-(1/2)*n)*x^(2*_n1)/GAMMA(_n1+1), _n1 = 0 .. infinity))/GAMMA(-(1/2)*n)