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derivatives and subscripts

  • To: mathgroup at smc.vnet.net
  • Subject: [mg108715] derivatives and subscripts
  • From: "fizzy" <fizzycist at knology.net>
  • Date: Mon, 29 Mar 2010 05:20:50 -0500 (EST)

I try to use subscripts as much as possible even for defining functions 
of say x,y,z....Note that I use the palette to do this which I can't 
reproduce here....example.....defining the 'x' component of the Electric 
Field which is a function of Cartesian coordinate 'x'......

E subscript Script x [x]


where the E subscript comes from the Basic Math palette....and the 
Script x comes from the Special Characters palette.....E is taken from 
the Greek letters....

there is no problem with this until I take the derivative....I get the 
following output...


(E subscript Script x) ' [x]......

Prior to version 6 I got what i wanted, namely....

E subscript Script x ' [x] ......


.....I tried a rule to get rid of the extra parentheses as well as a 
Format statement....but neither fixed it....I also tried the Notations 
package to Symbolize subscripts  but still get the same output.....here 
is how I tried to use a rule....

rule={(E subscript Script x) ' [x] -> E subscript Script x ' 
[x]//HoldForm......}

any ideas?

thanks...jerry blimbaum


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