The solutions produced by Maple usually need a certain amount of "massaging" to make them understandable by us mere mortals. For instance, the solution obtained by Will needs something like this for me to understand it: sol_a := allvalues(select(has,sols,a)); sol_theta := allvalues(select(has,sols,theta)); seq(simplify(sol_theta[i]),i=1..2); where sols is the name given to Will's solution. Hope this helps, J. Tarr

If you want the implicit equation from your two parametric equations, see ?algcurves[implicitize]. To plot it see ?plots[implicitplot] Hope this helps, J. Tarr

Please see ?with. Try something like this restart; test1:=proc(a,b,c) local perm1; perm1:= combinat:-permute([a,b,c],3) end proc; or, test2:=proc(a,b,c) local perm2; uses combinat; permute([a,b,c],3) end proc; Hope this helps, J. Tarr

If they are to be plotted, d(p) and s(p) have to be specified. Presumably they are the same as in Jp's original question on 2006-9-27? The plottools[reflect] command doesn't work for me without a second argument, although the help page says it is optional. But if it is optional, what is the default point, or line, about which the reflection is to occur? J. Tarr

Basically you need to archive your module in a repository and put that in your library file. Have a look at ?repository,management (library) and ?march and ?libname. Assuming that your module is in an archive located in a file named Mylib, in Windows your worksheet would need to start, >libname:= "c:/maths/mystuff/Mylib" , libname: >with(Mymodule); (Under Linux replace c:/etc with appropriate path.) Hope this helps. J. Tarr

Perhaps it's a bug. Using the "old" stats package, one gets the same standard deviation for both a list of values (as in d1) and for a list of "Weights" (a combination of d2 and d3). They agree with your result for Statistics[StandardDeviation](d1). However, the mean obtained by both the "old" stats package and the "new" Statistics package is the same, however calculated. Perhaps the best way around the problem is to use the "old" stats package, or perhaps the Statistics Supplement to Maple by Zavan Karian Hope this helps. J. Tarr

Try something like this >restart; with(plots): >i := 1; >if i=1 then display( plot(2*x + 3,x=0..5), plot(x^2,x=0..5) ); else print("nothing"); end if; Hope this helps. J. Tarr

Try this: > solve(r^4 +10*r^2 +9*r=0,[r]); This produces the roots/factors. Hope this helps. J. Tarr

It is not possible to display the determinant of the summation of two 6 x 6 "symbolic" matrices, though one can display individual terms, or groups of them, out of the total of 46080 terms. But, perhaps you could achieve what you want numerically? Hope this helps. J. Tarr

Try this: a*x/(2*b) - c/(3*d) + x = 1; solve(%,{x}); J. Tarr

Try something like this: restart; eq := y (t) = a + b*t + c*t^2; diff(eq,t); Hope this helps J. Tarr

Try this showstat(dsolve[rfk45]); Hope this helps. J. Tarr

There is an excellent tutorial here and here You will find other applications related to your line of studies at the Maple Application Center. Good luck, J. Tarr

Assuming that you have Maple 10.03, see ?Greenstheorem,definition, ?VectorCalculus and ?Student[VectorCalculus]. You may find the Student VectorCalculus Example Worksheet helpful - there is a link at the bottom of the Student Vector Calculus Overview help page. Hope this helps, J. Tarr

Try this a20:=cos(Pi/17) = sqrt(sqrt(38*sqrt(17) + 170) + 3*sqrt(17) + 17)/8 + sqrt(34 - 2*sqrt(17))/16 - sqrt(17)/16 + 1/16: evalf(a20); convert(%,rational); evalf[50](a20); convert(%,rational); see ?convert,rational and ?evalf,details. Hope this helps J. Tarr