Re: How to print TraditionalForm without evaluation
- To: mathgroup at smc.vnet.net
- Subject: [mg92625] Re: How to print TraditionalForm without evaluation
- From: Albert Retey <awnl at gmx-topmail.de>
- Date: Thu, 9 Oct 2008 06:33:18 -0400 (EDT)
- References: <gci1sm$iv$1@smc.vnet.net>
Serych Jakub wrote: > I want to write notebook which prints simple integration examples with > results for the students. > Something like: > > ex1 = (1 - 3*x^3 + 2*x^5)/(4*x^3); > ex2 = (-5*x^(1/4) + (x^2)^(4/3))/x^(3/2); > > Grid[{ > Table[ > TraditionalForm[Integrate[Symbol["ex" <> ToString[nr]], x]], {nr, 1, 2}], > (* do not integrate this *) > Table[ > TraditionalForm[Integrate[Symbol["ex" <> ToString[nr]], x]], {nr, 1, 2}]}, > (* integrate this *) > Frame -> All, ItemStyle -> Directive[FontSize -> 18, Bold]] > > (there will be much more examples ex3,ex4, etc.) > > This works nice, but I need to tell Mathematica not to Integrate in the first > row of the table - examples (only in the second one - results). Is there any > possibility to suppress the evaluation of the Integral in the first row of > the grid and just print the symbol of Integral and the TraditionalForm of the > example behind it? This is what I would do: ex[1] = (1 - 3*x^3 + 2*x^5)/(4*x^3); ex[2] = (-5*x^(1/4) + (x^2)^(4/3))/x^(3/2); heldintegrate[expr_, x_] := With[{e = expr}, HoldForm[Integrate[e, x]]] Grid[{Table[TraditionalForm[ heldintegrate[ex[nr], x] ], {nr, 1, 2}],(*do not integrate this*) Table[TraditionalForm[Integrate[ex[nr], x]], {nr, 1, 2}]},(*integrate this*)Frame -> All, ItemStyle -> Directive[FontSize -> 18, Bold]] hth, albert