Hi everyone! I have a really important question about maple: while using maple to solve my problem (PDE, a few threads before), I did pay attention to the fact the maple is giving different values for 2 equal expressions! for example: assume we want to express sin(d) as a function (only) of tan(d). It's easy to see that 1/tan^2(d) is equal to [1/sin^2(d)]-1. therefore: 1/sin^2(d)=[tan^2(d)+1]/tan^2(d) from this we have immediately: sin(d)=tan(d)/sqrt(tan^2(d)+1) now, when I put sin(d) in my solution, I didn't get the same answer as I got with the expression to sin(d) above!!! Why is this happenning? and what can I do to get ovet it? (I really need to use the expression above instead of sin(d))

Hi I'm new to Maple. I've had it for years and am just now getting into it. My problem is how to simultaneously solve a set of equations that feature some nonlinear terms. This isn't a set ODE's. They are algebraic equations with nonlinear integral terms like, I2:=int(cos(Pi/2/Theta*e)^4.545*sin(e)*cos(e-phi),e=theta..Theta); There are 3 variables to solve for after the variable theta has been specified. Equation 1 has the nonlinear terms and the other 2 equations are linear. I can post all 3 equations if someone can help. I saw an example on this site for a vibration problem solved with the Runge-Kutta method but the dsolve command was used and mine aren't ODE's. I have version 7.

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Hello, When i used command 'Eigenvector' to find eigenvalues and eigenvectors of mechanic system like this : (wfem,modvecs) := Eigenvectors(mm,kk); # mm,kk are mass and stiffness matrices of system . It returns a complex vector and matrix. But when use : (modvecs,wfe):=Matlab[eig](mm,kk,eigenvectors=true); It returns a float matrix and vector, i try using Matlab to solve and it also retrurns a result similar to Matlab[eig]. The important thing is two results of two command 'Eigenvector' and Matlab[eig] are difference. After that, I use 'Map' command to take real part of result(in 'Eigenvector'),but it works only with 'map' ,and 'Map' doesn`t.

Goodday, Ladies and Gents, My Prof. has asked us to prepare text files containing pi, e, sqrt(2) and the golden mean to 100,000 places for class next week. Easy enough ((evalf[200])(sqrt(2)),(evalf[200])(exp(1)),evalf[200](Pi) - excepting for golden mean. Is there a quick way to do it? Thanks. Evyn

Dear all, I have query with 9X9 matrix of MAss and Stifffness ; So please kindly help me how to solve it. Thx,Rgds PNChary

The episode is called Surviving Math education and the guest is Jack Weiner, author of the book, and e-book the Mathematics Survival Kit.

While trying to install Maple 10(Single User), after the initial install everywhere finishes, during the screen with the Maple 10 Spash I get an "This Application has Unexpectedly Quit" Invocation of this Java Application has caused an InvocationTargetException. This application will now exit. (LAX) Details are: java.lang.NullPointerException at ZeroGga.a(DashoA8113) at ZeroGga.a(DashoA8113) at ZeroGfs.a(DashoA8113) at com.zerog.ia.installer.AAMgr.a(DashoA8113) at com.zerog.ia.installer.Main.d(DashoA8113) at com.zerog.ia.installer.Main.a(DashoA8113) at com.zerog.ia.installer.Main.main(DashoA8113)

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I wonder why the "asympt" doesn't expand the BesselI right!! Is there another way to exapnd it without using "asympt"

Boston publishing company is seeking reviewers for the technical evaluation of Maple 10 algorithms. These algorithms will serve as interactive math tutorials for a premiere college-level student Web site. Experience using Maple, Mathematica or MathCAD is required. A strong mathematics background is preferred. All work will be completed online using a PC. The term of the contract is approximately 15 hours per week for 6 months.

I have been using solve in Maple 9.5 to solve a system of equations with a very large solution (90,000 terms provided in about 10 mins). Access to Maple 9.5 was unvailable so I used Maple 9; I gave up waiting after several hours and seeing memory use go up to 1Gb. Is there a big difference in the coding to explain this. Also, I don't yet have Maple 10; does it have any further improvements?

One of the good things about Maple 10 is if I type > f_max:=10; then max is written as a subscript of f; and the variable f_sub_max is asssigned the value 10. However, there is problem with this syntax. One assigned > f_max:=10; I can not use f as a variable name. Is there any solution to the problem? I like the varaible names with subscripts rather than underscore.

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I am a graduate student in Amir kabir University in Iran, I am in desprate need of help, My problem is I have a 4D lie algebra,and a metric tensor onfilteredo calculate Ricci tensor & some other things,in maple,or where ever it could be done. PLEASE HELP Me. Sencerely, Fatemeh