Re: Re: dynamicmodule with f[x_] possible?

*To*: mathgroup at smc.vnet.net*Subject*: [mg104596] Re: [mg104511] Re: [mg104470] dynamicmodule with f[x_] possible?*From*: Matthew Kooshad <matthewkooshad at gmail.com>*Date*: Wed, 4 Nov 2009 01:39:37 -0500 (EST)*References*: <18085121.1257066820723.JavaMail.root@n11> <005701ca5af2$c7c19ae0$5744d0a0$@net>

oh sorry, i had posted it to the group, but maybe it didn't go through properly. i looked on the group and was able to see it. here it is: f[x_] := 0 DynamicModule[{x = 0, b = 0}, Deploy[Style[ Panel[Grid[ Transpose[{{Style["x", Red], Style["b", Red], "sum", "diff", "product"}, {InputField[Dynamic[x]], InputField[Dynamic[b]], InputField[Dynamic[N@f'[x] + b], Enabled -> False], InputField[Dynamic[N@f'[x] - b], Enabled -> False], InputField[Dynamic[N@f'[x] b], Enabled -> False]}}], Alignment -> Right](*Grid*), ImageMargins -> 10](*Panel*), DefaultOptions -> {InputField -> {ContinuousAction -> True, FieldSize -> {{5, 30}, {1, Infinity}}}}](*Style*)](*Deploy*)] you see i am using the derivative there in the addition , subtraction, and multiplication calculations. it is not using the derivative there in the calculations however... thanks again for your help on figuring this out :) On Tue, Nov 3, 2009 at 5:22 PM, DrMajorBob <btreat1 at austin.rr.com> wrote: > I have no idea what pieces of code you're putting together to see a failu= re. > Send a complete example. > > Bobby > > On Tue, 03 Nov 2009 14:18:22 -0600, Matthew Kooshad > <matthewkooshad at gmail.com> wrote: > >> ok, thanks for the note about N@. >> >> any idea why it doesn't work to put the derivative (N@f'[x]) there >> rather than simply N@f[x] ? >> >> thanks! >> >> On Tue, Nov 3, 2009 at 2:16 PM, DrMajorBob <btreat1 at austin.rr.com> wrote= : >>> >>> anything@anythingElse is the same thing as anything[anythingElse]. Look >>> up >>> "Prefix" in Help. >>> >>> It only works when "anything" accepts a single argument, of course. >>> >>> And yes... both versions need f defined (unless you want results in ter= ms >>> of >>> an unknown f). >>> >>> Bobby >>> >>> On Tue, 03 Nov 2009 01:50:44 -0600, Matthew Kooshad >>> <matthewkooshad at gmail.com> wrote: >>> >>>> thanks a lot, David :) >>>> does the 2nd example need f[x] set above it too (like f[x_] := >>>> BesselI[1,x])? >>>> i tried the 2nd example without the f[x] set above it, and i replaced >>>> N@f[x] with N@f'[x] , but that didn't work to show the derivative. >>>> it's my first time to see this N@ syntax, so i'm not sure why it >>>> didn't show the derivative. any ideas? >>>> i wish for the derivative to be calculated each time i press enter in >>>> the text box based on whatever function is in the inputfield. >>>> thanks again, >>>> >>>> On Sun, Nov 1, 2009 at 6:56 AM, David Park <djmpark at comcast.net> wrote= : >>>>> >>>>> For a simple case: >>>>> >>>>> f[x_] := BesselI[1, x] >>>>> >>>>> DynamicModule[ >>>>> {x = 0}, >>>>> Column[{ >>>>> Row[{"x: ", InputField[Dynamic[x], FieldSize -> {5, 1}]}], >>>>> Dynamic@Row[{"f[x]: ", N[f[x]]}] >>>>> }](* Column *) >>>>> ] >>>>> >>>>> For something like your example: >>>>> >>>>> DynamicModule[{x = 0, b = 0}, >>>>> Deploy[Style[ >>>>> Panel[Grid[ >>>>> Transpose[{{Style["x", Red], Style["b", Red], "sum", "diff", >>>>> "product"}, {InputField[Dynamic[x]], InputField[Dynamic[b]= ], >>>>> InputField[Dynamic[N@f[x] + b], Enabled -> False], >>>>> InputField[Dynamic[N@f[x] - b], Enabled -> False], >>>>> InputField[Dynamic[N@f[x] b], Enabled -> False]}}], >>>>> Alignment -> Right](* Grid *), >>>>> ImageMargins -> 10](* Panel *), >>>>> DefaultOptions -> {InputField -> {ContinuousAction -> True, >>>>> FieldSize -> {{5, 30}, {1, Infinity}}}} >>>>> ](* Style *) >>>>> ](* Deploy *) >>>>> ] >>>>> >>>>> >>>>> David Park >>>>> djmpark at comcast.net >>>>> http://home.comcast.net/~djmpark/ >>>>> >>>>> >>>>> From: matthew kooshad [mailto:matthewkooshad at gmail.com] >>>>> >>>>> hello, i would like to make f[x_] dynamic and based on input. >>>>> i've tried changing "a = 0" for example to f[_x] = 0 and replacin= g all >>>>> other "a" with f[x], but no luck there. will someone please guide me >>>>> on this? thank you :) >>>>> >>>>> DynamicModule[{a = 0, b = 0}, >>>>> Deploy[Style[ >>>>> Panel[Grid[ >>>>> Transpose[{{Style["a", Red], Style["b", Red], >>>>> "sum", "diff", "product"}, {InputField[Dynamic[a]], >>>>> InputField[Dynamic[b]], >>>>> InputField[Dynamic[a + b], Enabled -> False], >>>>> InputField[Dynamic[a - b], Enabled -> False], >>>>> InputField[Dynamic[ab], Enabled -> False]}}], >>>>> Alignment -> Right], ImageMargins -> 10], >>>>> DefaultOptions -> {InputField -> {ContinuousAction -> True, >>>>> FieldSize -> {{5, 30}, {1, Infinity}}}}]]] >>>>> >>>>> >>>>> >>>> >>> >>> >>> -- >>> DrMajorBob at yahoo.com >>> > > > -- > DrMajorBob at yahoo.com >

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