Re: Re: notation help: f(x) = (sin x)^(1/3)

• To: mathgroup at smc.vnet.net
• Subject: [mg30024] Re: [mg29981] Re: notation help: f(x) = (sin x)^(1/3)
• From: "???? ????" <MTheory at msn.com>
• Date: Sat, 21 Jul 2001 16:16:48 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

```MathGroup: please append my first response to this question with the following:

Hi There Tim,
I just thought I should mention, just in case it was not just on your pos
t that you used "[[Sin[x]]", but only one set of Brackets is necessary.
They are in most cases reserved for the arguments of functions and are therefore
not readily substitutable with "()".
However, with respect to achieving the result I believe you are trying to get
at, remember that Mathematica works with the complex field by default.
A simple solution to your problem involves only first loading the file
RealOnly (i.e. Real numbers) as follows:

<<Miscellaneous`RealOnly`

Plot[Sin[x]^(1/3),{x,-10,10}]

Regards,
Jon Rockmann
----- Original Message -----
From: peter weijnitz
To: mathgroup at smc.vnet.net
Subject: [mg30024] [mg29981] Re: notation help: f(x) = (sin x)^(1/3)

enter:
Plot[Sin[x]^(1/3), {x, -10, 10}]
instead
careful about () ,[]  and {} they have definite meanings in Mathematica
Peter

Tim 9-23 wrote:

> How do I plot this.  I must not be entering it correctly.  It's the
> plot of the cube root of the Sine function.
>
> Plot[[Sin[x]]^(1/3), {x, -10, 10}] isn't working.  Thanks.
>
> My email address is anti-spammed.  Remove the 2 B's after hitting email reply
> if you want to email me.
>
> Tim 9-23

```

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