Mathematica 9 is now available
Student Support Forum
-----
Student Support Forum: 'derivitive f'[x] stopped working' topicStudent Support Forum > General > Archives > "derivitive f'[x] stopped working"

< Previous CommentHelp | Reply To Comment | Reply To Topic
Author Comment/Response
yehuda ben-shimol
03/31/12 9:33pm

Read the help on Derivative
f' is just a shortcut for Derivative[1][f] for a SINGLE ARGUMENT functions while you are using two arguments
here you need to be more specific
see what
Derivative[1,0][f] gives
maybe as a novice you need to try
D[f[x,r],x]
and than assign the values for the arguments using ReplaceAll
that is
D[f[x,r],x]/.{x->0.2,r->0.5}
etc.
yehuda

URL: ,

Subject (listing for 'derivitive f'[x] stopped working')
Author Date Posted
derivitive f'[x] stopped working kt 03/30/12 9:12pm
Re: derivitive f'[x] stopped working yehuda ben-s... 03/31/12 9:33pm
< Previous CommentHelp | Reply To Comment | Reply To Topic