Maple Questions and Posts

These are Posts and Questions associated with the product, Maple

I would like to plot the real and imaginary parts of a single complex function, not two different ones.  I understand that choosing the option of "expression_plot" will allow this.  Doing this continues to yield an error.  I would like to see the precise formatting of this command.

 

  Thank you.

Hello.

I am relatively new to MAPLE. I have a large fraction (actually a Bessel differential equation) which I like to break into single terms, i.e. to cancel the denominator with single summands.

"(diff(g(r),r)*f(phi)*r+r^2*diff(diff(g(r),r),r)*f(phi)+g(r)*diff(diff(f(phi),phi),phi)+h^2*g(r)*f(phi)*r^2)/g(r)/f(phi) = 0"

I tried full partial fraction, but it doesn't accept "g(r)*f(phi)" as variable.

any ideas?

all the best.
 

Hi all, i have been using maple for some time now. But one thing still bothers me. The use of radian in stead og degree. I found a way to work around it, but still.

So i looked at the help file, and found some intresting commands like:

  • AddSystem - "The AddSystem(unit_name, opts, units) function adds or redefines a system of units in the current session"
  • UseSystem

Can't that be used to forcing maple to calculate in degrees rather then radian.

 

/Simon Johansen

hi!

i am new to Maple (just purchased 13) as well as trigonometry, which i am using Maple for! i'm trying to use Maple for all of my Chem and Trig homework because I am a Physics major and I think i'll probably be using this for years, so might as well get accustomed now!

basically, one of the problems has a figure with a unit circle on a cartesian plane. the "t-line" (or plot line, i dont know) has tick marks that represent the length of (t), and they go from 1 to 6. to give a better "mental image":

hi all! i am **brand new** with maple 13 as well as trigonometry, which i am using the program for. i have figured out how to plot the unit circle with the command:

>plot( [cos(t), sin(t), t=0..2*Pi] );<

hi all! i am **brand new** with maple 13 as well as trigonometry, which i am using the program for. i have figured out how to plot the unit circle with the command:

>plot( [cos(t), sin(t), t=0..2*Pi] );<

Dear experts, I need to know how I can calculate the mean and the standard deviation from a matrix? Can anybody help me with this? Kind regards! Marc

Hi,

How can I add a super-script circle degrees symbol in a plot label?

 

E.g. plot(x^2, labels=["Distance", "Temperature (degrees celcius)"]); ... etc

Hi all,

Wondering if there is a way to change the HUE color range that will be used for listdensity plot.

Currently default setting is to use the full HUE color. But what we need is a shorter range, e.g., only from orange to blue.

Can it be achieved?

Or the PLOT structure has to be used?

 

This is the code i am using now.

Is there any function that we can sort a list / vector?

What abt a matrix? e.g.

M:=Matrix([[2, 5], [4, 0], [3, 9]]);

The sorted matrix (based on its first column) will be:

Matrix([[2, 5], [3, 9],[4, 0]]);

hello

 

 

I use

plots[odeplots](dsol,[t,(D(X[5](t))(t),0..5,numpoints=100);

when dsol=dsolve(..........) which is a procedure to plot first derivative of X[5] now I wanna know what should I use to plot second derivative of that

 

I used

plots[odeplots](dsol,[t,(D[1,1](X[5](t))(t),0..5,numpoints=100); but nothing shows up

and some other commands none of them works for me.

 

Thanks

 

bye

 

 

 

 

Is there any maple command that I can use dsolve with method=implicit I could not find that in help?

 

thanks

 

 

restart:
with(LinearAlgebra):
A:=RandomMatrix(3,2, generator=1..3);

                               [1   1]
                               [       ]

> A:=Matrix([[1,2,2,3],[5,1,0,4],[6,7,3,4]]);
> V:=<6,5,9>;
                            

I want to add vector V as a new column [e.g. 3rd column] in matrix A, is there any function to do that simply? What abt to add as a row?

Hi!

I have the follwing problem. I have the matrix

B C F G 7    8    9  
0  1 2 3 21 22  23

And each input of the 1st line should result in the 2nd line. E.g. Input B, should result Output  0 or Input 8 should result 22. I mean the analog function in Excel: vlookup

Is that possible?

Thank you!

Johann

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