Re: How to write a loop
- To: mathgroup at smc.vnet.net
- Subject: [mg2663] Re: How to write a loop
- From: carolafb at sbox.tu-graz.ac.at (Carola Friederike Berger)
- Date: Sun, 3 Dec 1995 02:54:25 -0500
- Organization: Graz University of Technology, Austria
Ian Collier (ianc at wri.com) wrote:
: In article <48h4dh$rd5 at ralph.vnet.net>, "Enrico C. Walker"
: <ewalke1 at gl.umbc.edu> wrote:
:
: > I need to raise a number to some large exponent - i.e. 245 ^ 500.
: > I know that I may run into a problem by plugging it directly. so I'd
: like to find the result
: > by using some sort of programming loop such.
: >
: > DO 250 times
: > begin
: >
: > x = x * 245 ^ 2
: >
: > end
: > PRINT X
: >
: > Can I do such programming in MATHEMATICA? Please advise.
: >
: > -RICO-
:
: There is no need to resort to loops.
:
: Any copy of Mathematica should be able to evaluate
:
: 245^500
:
: without significant problems. It takes a matter of seconds on
: the Macintosh Quadra 700 on my desk.
:
: I hope this helps.
:
: --Ian
:
: -----------------------------------------------------------
: Mathematica Training
: Wolfram Research, Inc.
: -----------------------------------------------------------
:
On my IBM-Compatible 486-66 it took 0.22 seconds to evaluate the code given
above (measured with: Timing[x = 1;Do[x = x*245^2,{250}]; x]).
--
Carola Friederike Berger alias carolafb at sbox.tu-graz.ac.at