Re: Interesting problem looking for a solution.

*To*: mathgroup at smc.vnet.net*Subject*: [mg122031] Re: Interesting problem looking for a solution.*From*: "David Park" <djmpark at comcast.net>*Date*: Mon, 10 Oct 2011 04:26:10 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*References*: <3419157.43225.1318144358445.JavaMail.root@m06>

Gary, You will probably have to create your own array of functions from which you can randomly pick. Also I am not going to go into generating the worksheets, which I presume are Mathematica notebooks, because it is a bunch of fiddly work in programmed writing of notebooks. However, the Presentations application has a routine that allows you to generate graphs of functions, sometimes as a series of points but you can also force them to be compressed into a gibberish looking string. For example: << Presentations` Clear[testplot1]; HiddenNotebookData[testplot1, "function 1", Compress@Draw[x Sqrt[x], {x, 0, 1}]] This generates the following Input cell in the notebook: testplot1 = <<function 1>>; This could be sent to the worksheet as an initialization cell. If the student looks at testplot he will only see the compressed string form, or a Line with points in uncompressed form. Then the worksheet could contain the following statement, which might be built-in with perhaps the matching Draw statement initially missing. Draw2D[ {(* Graph of test function to match *) {Red, Uncompress@testplot1}, (* Matching function graph generated by student *) {Draw[x^2, {x, 0, 1}]}}, Frame -> True] The student can then experiment with the matching function to attempt a match. The HiddenNotebookData command is in the Writing/Manipulations/Other group on the PresentationsPalette. David Park djmpark at comcast.net http://home.comcast.net/~djmpark/ From: Church, Gary [mailto:churchg at smccd.edu] Hello, I have an (I think) interesting problem for you Mathematica gurus. I'm trying to create a worksheet for my students and want to be able to display the plot of a randomly generated function f[x], without them being able to access the expression which defines f; In other words, I don't want them to be able to evaluate f[x]. The idea is that each student will get a different function f[x] and will see a different graph and they have to determine the expression which defines f. They then have to plot the function they think is f against the actual function f[x] and turn in the two plots (or the one plot with the two graphs.) Is this possible? Thanks much, Gary

**Follow-Ups**:**Re: Interesting problem looking for a solution.***From:*Murray Eisenberg <murray@math.umass.edu>

**Re: Different scales on the same axis**

**Re: Interesting problem looking for a solution.**

**Re: Interesting problem looking for a solution.**

**Re: Interesting problem looking for a solution.**