cosx - sinx + 3x2

From: ·······@gmail.com
Subject: cosx - sinx + 3x2
Date: Sun, 01 Jan 2006 15:41:22 +0000
Message-ID: <1136130082.085214.39560@g49g2000cwa.googlegroups.com>

How can i write this function in drscheme.
cosx - sinx + 3x2

Re: cosx - sinx + 3x2 John
Re: cosx - sinx + 3x2 GB
- Re: cosx - sinx + 3x2 Marco Antoniotti
Re: cosx - sinx + 3x2 Harald Hanche-Olsen

From: John
Subject: Re: cosx - sinx + 3x2
Date: Sun, 01 Jan 2006 18:40:47 +0000
Message-ID: <D7adnRGZoqK2vyXeRVn-uw@comcast.com>

·······@gmail.com wrote:

> How can i write this function in drscheme.
> cosx - sinx + 3x2

which do you mean?

cos(x) - sin(x) + 6
cos(x) - 2*sin(x+3)
cos(x) - sin(2*(x+3))
cos(x) - sin(x+6)
.
.
.

From: GB
Subject: Re: cosx - sinx + 3x2
Date: Sun, 01 Jan 2006 20:03:01 +0000
Message-ID: <%zWtf.28566$9G.2216@dukeread10>

·······@gmail.com wrote:
> How can i write this function in drscheme.
> cosx - sinx + 3x2
> 

I don't know about scheme, but in common lisp it is

    (+ (- (cos x) (sin x)) (* 3 x x))

assuming you mean (using BASIC syntax)

    cos(x) - sin(x) + 3*x^2

Gregg

From: Marco Antoniotti
Subject: Re: cosx - sinx + 3x2
Date: Mon, 02 Jan 2006 22:21:24 +0000
Message-ID: <1136240484.723716.29270@z14g2000cwz.googlegroups.com>

GB wrote:
> ·······@gmail.com wrote:
> > How can i write this function in drscheme.
> > cosx - sinx + 3x2
> >
>
> I don't know about scheme, but in common lisp it is
>
>     (+ (- (cos x) (sin x)) (* 3 x x))
>
> assuming you mean (using BASIC syntax)
>
>     cos(x) - sin(x) + 3*x^2

Which in Common Lisp is also :) (with the INFIX package)

     #I(cos(x) - sin(x) + 3*x^2)

Cheers
--
Marco

From: Harald Hanche-Olsen
Subject: Re: cosx - sinx + 3x2
Date: Sun, 01 Jan 2006 17:02:08 +0000
Message-ID: <pcomzifzxtb.fsf@shuttle.math.ntnu.no>

+ ·······@gmail.com:

| How can i write this function in drscheme.
| cosx - sinx + 3x2

Here's a step by step instruction.

1. Learn the basics of the language.
2. Translate your expression into the target language.
3. Test your solution.  If succesful, quit.  Otherwise, return to 1.
4. Write to comp.lang.scheme (/not( comp.lang.lisp), explaining what
   you wrote, what you expected to happen, and what really did.

-- 
* Harald Hanche-Olsen     <URL:http://www.math.ntnu.no/~hanche/>
- Debating gives most of us much more psychological satisfaction
  than thinking does: but it deprives us of whatever chance there is
  of getting closer to the truth.  -- C.P. Snow