I have the function,

f:=5000/(1+99*exp((-0.8*t)));

and I would like to find it's inverse....how can I do this?

hi

I want to get points from plot for example I have a graph like y=x but I do not know its function I want to get just some points from that like [1,1] ,[2,2] and the others but I dont know how?

the second problem which I have is I cannot show points like [1,2,2] by plot,it shows just 2D not 3D points.

I mean x=1,y=2,z=2

plot shows just 2D like x=1,y=2

thanks for your attention.

I have an BW image, which i can read in with ImageTools. now i simply want a histogram of it. the plothistogram function works, but i am not sure that it does right, because the numbers in the plot seem far to big. so i am trying to use the histogram function but i am only able to plot a histogram for a single vector of my image. is there an easy way to use the histogram function for the entire array? as the next step, i would like to compute the variance of the histogram....

Hello,

Is there a Maple procedure that generates all possible partitions of a given set? For example, for the set {1,2,3} it should give {1,2,3}, {1,{2,3}}, {2,{1,3}}, {3,{1,2}}, {{1,2,3}}.

If not, how could I write one?

Thank you!

Consider the following simple calculation with Ore algebras:

DA:=Ore_algebra[skew_algebra](euler=[theta,z]):
Ore_algebra[skew_power](sqrt(3)*theta,2,DA);
Error, (in Ore_algebra:-skew_power) skew polynomial must be member of the algebra

The error is due to the square root which is not recognized as a member of the algebra even though it is only a number. There seems to be no option to remedy this issue. Is there another solution ?

I made a model in MapleSim(Fig 1).

Here is the custom element named 'FcF' among the model. Its equation is defined as Fig 2.

I analyses
the model in Maple, the part related with the equation of FcF is shown
as Fig 3.

 I want to solve  matr.mw  for matrix A and B. Although it has 7 equations and 7 unknown parameters, but  doesnt have any result

Reza²⁹⁶¹

I made a model in MapleSim 4, and an error occurred after I pushed the
button of 'simulate the model'.Maplesim froze at the step named

'CreateDataRecord: using dsolve method=rosenbrock_dae'. But it was Ok

when this file was simulated in Maplesim 3.

Is here anybody met the same problem?

question.mwWhen I sloving an exercise in my textbook using maple,I had a difficult.

First,I write the differential equation, deq:=[...];then using command,sys1:=DiffEquation(...);I want to get the system transfer function,so I use command tf:=TransferFunction(sys1),but it returns an error[Error, (in DynamicSystems:-TransferFunction) cannot handle input with frequency variable, s].

Then,since TransferFunction...

I always change text color, and I want the color in math mode to be the same as the text mode.  Is there a way to do this automatically?  The math mode always comes up in black, even if the previous text was red etc...

Thank you.

My problem that i just simlply can`t start Maple 12 under Windows 7 x64 in classic worksheet mode.

I like that much and i tried the suggested maplew.exe -cw but i got the same fancy window what i get starting just maplew.exe.

I need help and thank you.

hi, i have an equation and i cant simplify it. i claculate with hand and i know the answer but with maple i cant give answer.

       aa:= sin(theta + tao s) cos(d s) + p d cos(theta + tao s) sin(d s)

        bb:=  sin(theta + tao s) sin(ds) - p d cos(theta + tao s) cos(d s)
                 cc:=         ...

Hi,

I am not very familiar with maple but have a problem that is probably very easy for an expert. I have the coordinates of three variables, but no specific function of it. I want to create a 3d graph with these coordinates but do not know how. I have done it before with a specific function, but do not know how to do it with solely the coordinates, I work with Maple 12. Could somebody please help me, it is very important for me! thanks in advance,

Hi! I am trying to solve this system:

 but I have a problem.

Y was trying to plot this fuction f(x)=3x^2-2x when x= 0.1,.09,...,-.1 but i can't i'm a new user.