Roger wrote:
>  If you can suggest the desired derivates/integrals, 
>  it would greatly aid in filling the gaps. e.g.
>
>            derivative      integral
>  0&o.
>  4&0.

Having long since forgotten my undergraduate calculus courses, I googled for
"online derivative calculator" and found this:

        http://www.numberempire.com/derivatives.php
        http://www.numberempire.com/integralcalculator.php
  
Looking up the definitions of 0&o. and 4&o. (viz, -.&.:*: and >:&.:*:
respectively), and plugging them into the above, I came up with:

        f      f d. 1               f d. _1                      
        0&o.   -@:(% -. *&:%: >:)   -:@:(_1&o. + ] * -. *&:%: >:)
        4&o.   % >:&.:*:            -:@:(_5&o. + ] * >:&.:*:)    

Verification left as an exercise for those who haven't forgotten their
undergraduate calculus courses :)  

-Dan

PS:  Of course we have some leeway with J style (e.g. we could write them
all paren free by replacing the @ parts with NVV equivalents, 0 - ... and 2
%~ ... etc).





----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm

Reply via email to