## Maple 2016 Questions and Posts

##### These are Posts and Questions associated with the product, Maple 2016

by: Maple 2016

Using a mouse's back/forward buttons or alt+ left arrow/ alt+right arrow did not work in Maple 2015 and they still don't work in Maple 2016.

Also, if you select anywhere in the search bar, it automatically selects all the words.  I sometimes (most the time) want to change only one word.

Im using x64 Windows 10 and it also did it when running Windows 8/8.1 .   Does anybody else have this problem?

Can it be fixed please if not?

## error after use ''for'' in program...

hi..when i use rule [for] in maple code i encounter error'''''

Error, (in dsolve/numeric/process_input) input system must be an ODE system, found {f1(x), f2(x), f3(x), ApproximateInt(-4*cos(theta)^2, theta = 0. .. 1, method = simpson), ApproximateInt(4*cos(theta)^2, theta = 0. .. 1, method = simpson), ApproximateInt(8*cos(theta)^2, theta = 0. .. 1, method = simpson)}''''''''

99999999999999.mw

i want for different beta for example beta=0, 40 and 80 this lines will computed three times

''with(Student[Calculus1]); a1 := ApproximateInt(g1*g1, theta = a .. 1, method = simpson); a2 := ApproximateInt(2*(g1*g1)+3*g1*(diff(g1, theta, theta)), theta = a .. 1, method = simpson).......................''

by {for i from 1 by 1 to 3 do } and final gain ''ITRA_1_W[m] := eval(fy33*g3, fixedparameter)'' that have 3 amount.

when i use  rule {for i from 1 by 1 to 3 do ...  }   integral not computed and showed for example:::

a1=ApproximateInt(4*cos(theta)^2, theta = 0. .. 1, method = simpson)!!!!!!!!

thanks..

## How do I find and access a temporary .stl file tha...

I read a posting by Mr. Stephen Forrest on Thingiverse about using the exportplot command to export a 3D plot as a .stl file. I have a 3D printer and need the convert the plot from the Maple file into an .stl file.

Here is the posting I am referencing:

Thingiverse/3dmodelimportexport.pdf

I was able to follow the commands successfully in the referenced paper for a hyperboloid or revolution that I plotted in Maple - it was very helpful. However, I could not figure out how to access the temporary .stl file that was created so that I could open it using my 3D printer's software.

My question is: Once I execute the "exportplot(stl, hyprev)" command that I inputted, how can I find the file in the Temporary Directory in order to open it from the software I use for my 3D printer?

I would appreciate any further details you can provide for accessing the temporary .stl file I created in order to be able to print the object.

Thank you!

## Make Maple touch friendly!

If you try and scroll a page up or down, it just selects the content.  How hard would it be to fix this?

## Math Input Panel...

I use Maple on a Surface Pro 4 tablet and the math input panel does not work with Maple.  This would be a great feature to have.  Or does anybody know how to get it working?

## Substituting value with template problem...

Why can't I sub both values at the same time and/or why does k stay symbolic but not d?

## Error, (in dsolve/numeric/bvp) system is singular ...

i have problem on running the ode bcs

there is cos n sine in ther ode

any idea to solve this ?

i have attched it

thnks
Maple Worksheet - Error

Failed to load the worksheet /maplenet/convert/Sc.mw .

## Why can't I assign to a name the expression A=(1,2...

Using Maple 2016, I created a new Document with one line:

A=(1,2,3)

Right-clicking on this expression I thought I could choose Assign to a Name, as is done in Clickable Calculus Series - Part 3: Multivariate Calculus, found here:

However, Assign to a Name does not appear in the context menu.

On the other hand, if I write

B=1,2,3

(with no parentheses) and right-click on this expression then Assign to a Name does appear in the context menu.

Any insights on this?

Thanks.

## Can Maple determine this ODE's initial value?...

Can Maple determine the value of DthetaZero such that the solution to the ODE, for some specific value of t, simultaneously provides the two values theta(t)=Pi and diff(theta(t),t)=0?

sol:=dsolve({4*sin(theta(t))*cos(theta(t))-9.8100*sin(theta(t))-(diff(theta(t), t, t)) = 0, theta(0) = 2*Pi*(1/3), D(theta)(0) = DthetaZero}, numeric)

odeplot(sol,[t,theta(t),diff(theta(t),t)],t=0..5) for trial values of DthetaZero shows that the desired value is

1.0340*Pi <DthetaZero<1.0345*Pi.

## Incorrect calculation of definite integral...

Quite accidentally I discovered incorrect calculation of the simple definite integral:

int(1/(x^4+4), x=0..1);

evalf(%);

1/8*ln(2)-1/16*ln(5)+1/32*Pi+1/8*arctan(1/3)   # This is incorrect result

0.1244471178

Is this a known bug?

If  first we calculate corresponding indefinite integral, and then by the formula of Newton - Leibniz, that everything is correct:

F:=int(1/(x^4+4), x):

eval(F, x=1)-eval(F, x=0);

evalf(%);

1/16*ln(5)+1/8*arctan(2)

0.2389834593

## Error, (in dsolve/numeric/bvp/convertsys) too few ...

hi...

pleaase help me for dsolve equations...

expected.mw

## Application of first order equations

Maple 2016

It is very important that you learn to pose and solve equations in practical problems. Ernest Mach, a famous scientist of the nineteenth century, said that algebra is characterized by a lightening of mind, because the solution of a problem, after building the equation, you can "forget" all the practical situation to focus on the mathematical expression; everything that is not necessary to solve the problem no longer interfere with your mind. Another famous scientist, Isaac Newton, wrote that the language of algebra is the equation. To see a problem concerning abstract relations of numbers or amounts, simply translate the problem of colloquial language to the algebraic language. Here I leave the application for first order equations developed in 2016 Maple.

(In Spanish)

Lenin Araujo Castillo

## Solve matrices symbolically...

Hello

Is there a way to solve matrices symbolically?

an example would be A*X=B

X=A^-1B

I have tried to look for a thing in maple that will do this but so far i had no luck. Does anyone know ?

## Problems with Maple 2016 worksheet text...

Given that I use Maple as a student I've had to update to the newest version to keep using Maple.

However I find I have a lot of problems with the new version.

Normally when I write an assignement or work on the given problems I use worksheet mode because it is the best mode to spot any mistakes, and I've grown accostumed to it.

My problem however is when I have to use text.

Normally I've hit CTRL+T to get Maple to recognize that I write text, whereupon I write the given assignment, and press CTRL+J for when I want to go on and write some math. However we do have a little issue about the symbols.

Since I am an engineering student we use a lot of greek letters, and in this case I bring up sigma. In the "old" Maple I pressed F5 to get into math, write the symbol I wanted, pressed F5 again to get back to text and keep writing. In Maple 2016 however I do the same and then at the end of the text paragraph maple spits out lines of blue text with all of the "math" that I have written.

So my question is thus: Can I stop Maple from giving me the blue text, or perhaps is there another way to type symbols without having to go into math?

## How Can I plot the data result of a program?...

hello!, How can i to plot the next data in a 2D plot?. it is the result of a loop for.... do....while. I had tried with pointplot anda dataplot, but must be something wrong!

with(plots);
for i from 1.73205080756887853 by 0.5e-2 while i < 2.87500000000000000 do roll := i; f1max := NLPSolve(f1, {f2 = i}, x1 = 0 .. 2, x2 = 0 .. 3, method = sqp, maximize = false); c := op([1], f1max), print(c, roll) end do; plot(roll, c);
Warning, limiting number of major iterations has been reached
2.86923108976435204, 1.73205080756887853
2.40562374977021154, 1.737050808
2.36135298525774395, 1.742050808
2.34703023482192563, 1.747050808
2.33762023747274306, 1.752050808
2.33074752039182975, 1.757050808
2.32549269761476607, 1.762050808
2.32138461334482216, 1.767050808
2.31814359109128576, 1.772050808
2.31558754335936889, 1.777050808
2.31359008686494683, 1.782050808
2.31205927196994354, 1.787050808
2.31092573645557353, 1.792050808
2.31013563350152307, 1.797050808
2.30964617400063910, 1.802050808
2.30942269107110354, 1.807050808
2.30943663600124838, 1.812050808
2.30966416809946962, 1.817050808

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