# [LON-CAPA-users] Unreduced answers in Numerical Response

**Lars Jensen
**
lon-capa-users@mail.lon-capa.org

*Wed, 9 Oct 2002 10:42:40 -0700 (PDT)*

Hi Ray,
The default doesn't mean that an expression *must* be entered, a single
number certainly would be accepted - it only means that a whoile range
of expressions also would be allowed. For example if the answer to a
college level chemistry problem is equivalent to the length of a 15
degree arc of a circle of radius 3^(1/2) m, the following answers should be
both accepted:
2*pi*sqrt(3)*15/360 m
0.45345 m
Don't you agree?
Lars.
On Wed, 9 Oct 2002, Ray Batchelor wrote:
>* Hi Lars,
*>*
*>* > This is as it should be for any class at college level or above - One
*>* > has to hope that these folks can do basic algebra. For this reason the
*>* > default for a numerical response should be "expressions allowed" (and
*>* > here I mean including perl functions, like sqrt, pi, sin, fraction,
*>* > etc.).
*>* >
*>*
*>* Well, one can hope.
*>* I wouldn't go quite as far as making this the default, though.
*>*
*>* On the other hand, in this day and age, maybe actual numbers should be
*>* disallowed....
*>* :)
*>*
*>* I forsee the day when the spreadsheet becomes the entire interface.
*>* Aaaaaaaahhhhh!
*>*
*>* Cheers,
*>* Ray
*>*
*>*
*>*
*
--
Lars Jensen, TMCC/Vista B200, 7000 Dandini Blvd, Reno NV 89512-3999.
Internet: <jensen@physics.unr.edu>, http://www.scsr.nevada.edu/~jensen
Tel: 775.673.7113 FAX: 775.674.7592