## Integrate Algebraic-Differential Expression...

I'm trying to integrate various expressions like f''(x)*g(x)+f'(x)*g'(x). In this case, the answer is obvious by inspection, f'(x)*g(x), but I can't coerce Maple to produce the result. Any ideas?

## Simplifying Vibration Equations...

I am looking into using Maple in an undergraduate Vibrations class and put together the attached worksheet as a sort of combination rough draft and feasibility study. The equation showing up after the algsubs command really bothers me; is there a way to remove the imaginary exponential terms and substitute trigonometric identities?

## evaluating problem...

From "t*x^3-q*x-2q^2=0" I got a complicated real solution. Then I want to evaluate "y= -x/2 -(x+2q)^2/(8t*x^2)" with the solution. But my Maple exited without results. I have tried many times. It was alway so. How can I evaluate it? Do I need some package? Or my memory (526M) is too small? Thanks

## to georgios kokovidis...

cant send you a private message so i just post my question about your reply to my post.it just gave the final answer?how do i get the solution?thanks!

## another questions...

thank you georgios kokovidis for acknowledging my question.thank you so much!however i still have questions.can anybody here please help me with this type of questions,im not an engineering or math major,so you can guys say im so bad with math.please help me.this are the questions. sketch the following and convert to rectangular: > 1.)x=t^(3), y=t^(2); 2.)x = (sec t)+2, y = (tan t)-1 3.) r = 2+2sin4thetha 4.) r = 4cos2theta find the dy/dx of the following: > 1.)x=t^(3), y=t^(2); 2.)x = (sec t)+2, y = (tan t)-1 3.) r = 2+2sin4thetha 4.) r = 4cos2theta find the equation of the tangent line to the function with the indicated information:

## Solve a non analtyical function...

I would like to solve a non analytical problem. I dont know the functions behaviour explicity because it involves a number of ranges - if and then statements. How best can I say find the point at which it becomes minimum? Thanks

## questions...

guys please help me with this questions. instruction:determine whether the following converge or diverge {n/n+1} (∑)(2^(n))/(n^(2)) (∑)((n!)^(2))/((2n)!) (∑) (n.3^(2n))/(5^(n-1)) (∑) (-1)^(n+1) n/(n^(2)+4) sum((-1)^n*n*(1/(ln*n)), n = 2 .. infinity) determine where the following power series converge: sum(n*x^n/(n^2+1), n = 2 .. infinity) (∑)(1.3.5.7...(2n-1))/(3.6.9.12...3n)(x-2)^(n) please

## Solving simultaneous equations...

I have the following matrix solution problem. M * v = v where M is a square matrix (integer values). v is a vector of variables whose values I want to solve for. I cannot figure out how I can get Maple to do this. Do I need to use some other software? It seems to me that I should be able to obtain a soltion to the problem. Is there a reason why there may be no solution? Thanks.

## Minimising a function of three variables...

I have a function which comprises a number of sub functions or procedures. E:= (r01,r12,r02) -> VrepR(r01,b01) + VrepR(r12,b12) + VrepR(r02,b02) + VattR(r12,b12)+Vbend(r02); > VrepR := proc(r,b): > rc:= evalf(b*2^(1/6)); if (r

## simple progress bar...

As a simple progress bar, I want to print a dot every time one step of a for loop is finished, for example I tried for i from 1 to nsteps do printf("."); end do: However, this prints all dots at once the moment the complete loop is finished. Using for i from 1 to nsteps do writeline(default,`.`); end do: prints every step a dot, however it includes a new line command (dots appear below each other). Does anyone has suggestions how to make the progress bar? Niels.

## Couple of months out

by: Maple
I have been playing with Maple on and off for 3 months. This summer, now that school is out, I have set about trying to master this environment. My frustration with Maple has subsided a bit only to be replaced with an understanding of its limitations. I set about building my own package of doing surface and flux integrals as a way of discovering how to manipulate expressions. I think I know why Maple is so tough. I read somewhere on these forums a diatribe on what seemed an esoteric nuance in the difference between the way Mathematica approaches functions vs the way Maple does. Mathematica is essentially a functional programming language wrapped around list structures (ala LISP). In mathematica everything, at the ground level, is a list. Various types get defined for different quantities but they are essentially lists. Maple defines its types internally. I don't know how they are put together (rtables?) Maple has evolved over time so that these types have grown to a huge number that are hard to keep track of. The inability of maple functions to screen their inputs for different data types means that the Maple programmers have to write lots of different functions for the different data types. This is a very old style of programming.

## How do I Verify...

I posted this question on the Newbie Forum without success, so I thought I should go ahead and post it here, too. My problem is simple algebra (except there is a lot of it). Every function involved is real, though I'm not sure exactly how to tell Maple that. The equation involves a term under a radical, which I think is the cause of my difficulties. To deal with the radical I use a the simplify/radical command, and I discover that the remaining radical exists in only one term. So I isolate that term on one side of the equation and square the equation. Then I discover that the variable I want to solve for is a common factor, and it appears in even powers. I do a subsitution and end up with a quadratic equation which I solve using the quadratic formula. When I plug the solutions back into the squared equation, I find that they correctly solve that form of the equation. However, when I plug them back into the original equation, I get a mess that I can't seem to simplify. I could use any help you can offer. I will attach a worksheet containing the relevant parts of my work here(with the messiest stuff removed).