Hi, problem is with 4 5 6 which denote the following:
coh=: 4&o. NB. sqrt (1+(y^2)) sinh=: 5&o. NB. hyperbolic sine of y cosh=: 6&o. NB. hyperbolic cosine of y see: http://code.jsoftware.com/wiki/Vocabulary/odot#dyadic There dosen't seem to be specific numbers for cot, sec and csc. You have to go by their definition: [image: \cot \theta ={\frac {\cos \theta }{\sin \theta }}=\tan \left({\frac {\pi }{2}}-\theta \right)={\frac {1}{\tan \theta }}] [image: \sec \theta =\csc \left({\frac {\pi }{2}}-\theta \right)={\frac {1}{\cos \theta }}] [image: \csc \theta =\sec \left({\frac {\pi }{2}}-\theta \right)={\frac {1}{\sin \theta }}] On Tue, Aug 15, 2017 at 12:41 PM, Linda Alvord <[email protected]> wrote: > > > Sent from AOL Mobile Mail > > > From: Linda Alvord <[email protected]> > Date: Tuesday, August 15, 2017 > Subject: FW: why are there no negative signs for cot,sec and csc? > Cc: lindaalvord <[email protected]> > >  > > > > > > > > From: Linda Alvord [mailto:[email protected]] > Sent: Tuesday, August 15, 2017 11:22 AM > To: '[email protected]' <[email protected]> > Subject: why are there no negative signs for cot,sec and csc? > > > > do=: 13 : '({.y) +(i.{:y)*(--/ 2{.y)%<:{:y' > > t=:do 0 2p1 17 > > all=:1 2 3 4 5 6 (o."0 1) t > > *all > > 0 1 1 1 1 1 1 1 0 _1 _1 _1 _1 _1 _1 _1 0 > > 1 1 1 1 0 _1 _1 _1 _1 _1 _1 _1 0 1 1 1 1 > > 0 1 1 1 1 _1 _1 _1 0 1 1 1 1 _1 _1 _1 0 > > 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 > > 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 > > 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 > > > > Linda > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
