Re: Hold and Equal

*To*: mathgroup at smc.vnet.net*Subject*: [mg73834] [mg73834] Re: Hold and Equal*From*: Peter Pein <petsie at dordos.net>*Date*: Fri, 2 Mar 2007 06:16:57 -0500 (EST)*References*: <200702261112.GAA27677@smc.vnet.net> <200702271044.FAA23846@smc.vnet.net> <es3i9c$ntm$1@smc.vnet.net>

Murray Eisenberg schrieb: > OK, that does what I explicitly asked for, but what I asked for was an > oversimplified case of what I actually wanted... ... > Moreover, if I try, say, > > step[Hold[Integrate[x^2,x]]] > > then Hold appears on both sides of the resulting equality. > > What I'm after is something that will allow me to show an equation of > the form, say, > > integral = evaluatedIntegral > > where the left-hand side uses the integral sign and a "dx" (as an > unevaluated expression), the right-hand side evaluates that integral, > and the entire expression appears in traditional mathematical form. > ... And the attribute HoldAll (or HoldFirst) doesn't work in your version? (the HoldForm can be seen, because I converted output to InputForm before copy/paste). It is invisible in the Notebook when using Standard- or TraditionalForm step[Integrate[x^2, x]] --> HoldForm[x^3/3 = x^3/3] SetAttributes[step, HoldAll] step[Integrate[x^2, x]] --> HoldForm[Integrate[x^2, x] = x^3/3] Peter