Re: Question about Manipulate

*To*: mathgroup at smc.vnet.net*Subject*: [mg122795] Re: Question about Manipulate*From*: Richard Hofler <rhofler at bus.ucf.edu>*Date*: Thu, 10 Nov 2011 06:56:31 -0500 (EST)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*References*: <201111091124.GAA11113@smc.vnet.net>

Hello, If you really want to follow the steps you show in your original post, then you can make f a function. Clear["Global`*"] f[a_,b_]:=Sin[a x+b] Manipulate[Plot[f[a,b],{x,0,4 \[Pi]}],{a,0.5,2},{b,0,2 \[Pi]}] Richard -----Original Message----- From: mailcwc at gmail.com [mailto:mailcwc at gmail.com] Sent: Wednesday, November 09, 2011 6:25 AM To: mathgroup at smc.vnet.net Subject: [mg122795] Question about Manipulate I tried the following code in Mathematica 8.0 Clear["Global`*"] f = Sin[a x + b] Manipulate[Plot[f, {x, 0, 4 \[Pi]}], {a, 0.5, 2}, {b, 0, 2 \[Pi]}] The Manipulate block is showed, but the Sin function is not plotted. When I replace f in the third line with its definition, Clear["Global`*"] Manipulate[ Plot[Sin[a x + b], {x, 0, 4 \[Pi]}], {a, 0.5, 2}, {b, 0, 2 \[Pi]}] The Sin function is plotted. Is this a bug or a limitation in Mathematica?

**References**:**Question about Manipulate***From:*"mailcwc@gmail.com" <mailcwc@gmail.com>