Re: TIB: Need help with math prog I am writing
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Re: TIB: Need help with math prog I am writing
that is true for vectors in threespace... the way i described it was for 3x3 matrices.
basically the same idea... the first vector needs to be A rows by B columns, and the
second needs to be B rows by A columns. the way you described it is for 3x1 vectors...
same deal, though.
ti-basic@lists.ticalc.org wrote:
> That's not the way I knew it
> V1=(A)i+(B)j+(C)k
> V2=(K)i+(L)j+(M)k
> V1•V2=(A*K)+(B*L)+(C*M)
> On Fri, 08 May 1998 08:59:48 -0700 "Brian E. Ash"
> <brian@communityonline.net> writes:
> >
> >
> >--------------C37CF76D39ED31E261537DAF
> >Content-Type: text/plain; charset=iso-8859-1
> >Content-Transfer-Encoding: 8bit
> >
> >dot product.
> >
> >[[a b c] [[j k l] [[aj+bm+cp,ak+bn+cq,al+bo+cr]
> > [d e f] * [m n o] = [dj+em+fp,dk+en+fq,dl+eo+fr]
> > [f g h]] [p q r]] [fj+hm+ip,fk+gn+hq,fl+go+hr]]
> >
> >
> >ti-basic@lists.ticalc.org wrote:
> >
> >> whats the dot products?
> >>
> >> forgive me, I know nothing about vectors.
> >>
> >> ---Rosyna <rosyna@wcoil.com> wrote:
> >> >
> >> >
> >> > returns the dot products of to vectors [r;Ø]
> >> >
> >> > >what does the dot( function do?
> >> >
> >> > ---
> >> > I pledge allegiance to the Mac of Apple Computer Incorporated, and
> >> to the
> >> > developers for which it stands, one platform, under Guy,
> >> indestructible,
> >> > with creativity and multimedia for all.
> >> >
> >>
> >> ==
> >> Garth Johnson
> >>
> >> gbjohnson@bigfoot.com -normal email
> >> brandtly@hotmail.com -Large files
> >>
> >> Visit my website!
> >> http://www.bigfoot.com/~garthjohnson
> >> _________________________________________________________
> >> DO YOU YAHOO!?
> >> Get your free @yahoo.com address at http://mail.yahoo.com
> >
> >
> >
> >--------------C37CF76D39ED31E261537DAF
> >Content-Type: text/html; charset=us-ascii
> >Content-Transfer-Encoding: 7bit
> >
> ><HTML>
> ><TT>dot product.</TT><TT></TT>
> >
> ><P><TT>[[a b c] [[j k l]
> >[[aj+bm+cp,ak+bn+cq,al+bo+cr]</TT>
> ><BR><TT> [d e f] * [m n o] =
> >[dj+em+fp,dk+en+fq,dl+eo+fr]</TT>
> ><BR><TT> [f g h]] [p q r]]
> >[fj+hm+ip,fk+gn+hq,fl+go+hr]]</TT>
> ><BR><TT></TT> <TT></TT>
> >
> ><P>ti-basic@lists.ticalc.org wrote:
> ><BLOCKQUOTE TYPE=CITE>whats the dot products?
> >
> ><P>forgive me, I know nothing about vectors.
> >
> ><P>---Rosyna <rosyna@wcoil.com> wrote:
> ><BR>>
> ><BR>>
> ><BR>> returns the dot products of to vectors [r;Ø]
> ><BR>>
> ><BR>> >what does the dot( function do?
> ><BR>>
> ><BR>> ---
> ><BR>> I pledge allegiance to the Mac of Apple Computer Incorporated,
> >and
> ><BR>to the
> ><BR>> developers for which it stands, one platform, under Guy,
> ><BR>indestructible,
> ><BR>> with creativity and multimedia for all.
> ><BR>>
> >
> ><P>==
> ><BR>Garth Johnson
> >
> ><P>gbjohnson@bigfoot.com -normal email
> ><BR> brandtly@hotmail.com -Large files
> >
> ><P>Visit my website!
> ><BR><A
> >HREF="http://www.bigfoot.com/~garthjohnson">http://www.bigfoot.com/~garthjohnson</A>
> ><BR>_________________________________________________________
> ><BR>DO YOU YAHOO!?
> ><BR>Get your free @yahoo.com address at <A
> >HREF="http://mail.yahoo.com">http://mail.yahoo.com</A></BLOCKQUOTE>
> > </HTML>
> >
> >--------------C37CF76D39ED31E261537DAF--
> >
> >
>
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