       Re: Examples using Trig option

• To: mathgroup at smc.vnet.net
• Subject: [mg35251] Re: [mg35237] Examples using Trig option
• From: Andrzej Kozlowski <andrzej at platon.c.u-tokyo.ac.jp>
• Date: Fri, 5 Jul 2002 02:18:47 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

```Since you do not need an example for each case I will provide just one:

In:=

Expand[Sin[2x]]

Out=
Sin[2*x]

In:=
Expand[Sin[2x],Trig->True]

Out=
2*Cos[x]*Sin[x]

Andrzej Kozlowski
Toyama International University
JAPAN
http://platon.c.u-tokyo.ac.jp/andrzej/

On Wednesday, July 3, 2002, at 06:14  PM, Ersek, Ted R wrote:

> 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 of
> 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
>   http://www.verbeia.com/mathematica/tips/Tricks.html
>
>
>
>
>

```

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