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I type in my equations using ctrl+- to make it look nice and my answer outputs in "Subscript^(0,1)[a,b]" form? What is going on? In the answer some bits are displayed with the actual subscripts and some are displayed in the above form, even for the same variable.

Edit: more specifics I am taking the partial derivative of a function H wrt to b. H is a function of many variables one of which is a_b. Is it possible that Mathematica is trying to take the derivative of the subscript because there is a b in there?

H=d k2 + c^2 k4 + k5 s^2 + k1 U + 
 k3 \[Theta] + (g (1 - d - U - \[Theta]) \[Theta] - 
    U (1 + s Subscript[e, s])) Subscript[\[Lambda], 
  1] + (-c d + s U Subscript[e, s]) Subscript[\[Lambda], 2] + 
 U Subscript[\[Lambda], 3]


DHds = Simplify[D[H, s]]
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How about a real example... – ciao Feb 7 '14 at 2:43
It looks like you might be taking partial derivatives of subscripted variables. The most useful answer is: Don't use Ctrl- to make it "look nice"... that's the problem right there! They only look nice, but are a pain in the butt when you want to do other things with them (also depends on what you want to do). – R. M. Feb 7 '14 at 2:58
You can select the cell contained your code and press Ctrl+Shift+I to change it into InputForm before you paste your code here. – xzczd Feb 7 '14 at 3:39
As rm-rf said, generally a PITA to use in the way you seem to want, but if you insist on "prettiness", you can just enclose the subscripts in your original definitions in double-quotes... – ciao Feb 7 '14 at 3:48
Try this: use es instead of Subscript[e, s], λ1 instead of Subscript[λ, 1], etc. and do the computations. Finally, to "prettify" the output, do DHds /. {es -> Subscript[e, s], λ1 -> Subscript[λ, 1], λ2 -> Subscript[λ, 2]} – R. M. Feb 7 '14 at 4:40

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