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MathGroup Archive 2002

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Re: Examples using Trig option

  • To: mathgroup at
  • Subject: [mg35253] Re: Examples using Trig option
  • From: "Allan Hayes" <hay at>
  • Date: Fri, 5 Jul 2002 02:18:51 -0400 (EDT)
  • References: <afugd0$rr4$>
  • Sender: owner-wri-mathgroup at


For example,

    Apart[1/(Sin[2x]), Trig->False]

        Csc[2 x]

    Apart[1/(Sin[2x]), Trig->True]

        Cot[x]/2 + Tan[x]/2

    Cancel[Sin[2x]/Sin[x], Trig->False]

        Csc[x] Sin[2 x]

    Cancel[Sin[2x]/Sin[x], Trig->True]

        2 Cos[x]


Allan Hayes
Mathematica Training and Consulting
Leicester UK
hay at
Voice: +44 (0)116 271 4198
Fax: +44 (0)870 164 0565

"Ersek, Ted R" <ErsekTR at> wrote in message
news:afugd0$rr4$1 at
> Hello  mathgroup,
> The usage message for Trig says:
> Trig is an option for algebraic manipulation functions which specifies
> whether trigonometric functions should be treated as rational functions of
> exponentials.
> ---------
> The built-in functions that have the Trig option are:
> Apart, ApartSquareFree, Cancel, Coefficient, CoefficientList, Collect,
> Denominator, Expand, ExpandAll, ExpandDenominator, ExpandNumerator,
> Exponent, Factor, FactorList, FactorSquareFree, FactorSquareFreeList,
> FactorTerms, FactorTermsList, FullSimplify, Numerator, PolynomialGCD,
> PolynomialLCM, PolynomialMod, Resultant, Simplify, Together.
> After searching all available documentation I can't find a single example
> where
> f[expr, Trig->True]   would give a different result than
> f[expr, Trig->False], and I can't come up with one on my own. Can you give
> some examples. An example for each function above is not necessary.
> ---------
> Thanks,
>   Ted Ersek
>   Get Mathematica tips, tricks from

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