This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)
How to | Change the Form of Input and Output
The user interface for Mathematica provides many options for formatting input and output.
The sum of from to is :
In[67]:=
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Out[67]=
While correct, this does not look like traditional mathematics. Select the cell group, then choose the menu item Cell Convert To TraditionalForm:
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Out[959]=
Alternatively, if you only want to format the answer, apply TraditionalForm:
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Out[68]//TraditionalForm=
    
InputForm and StandardForm work in reverse.
Use InputForm to find out how to type an expression into Mathematica:
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Out[70]//InputForm=
StandardForm is more compact than InputForm and is unambiguous to Mathematica:
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Out[71]//StandardForm=
TraditionalForm is sometimes ambiguous; in this case, Mathematica treats first as a number and then as a function:
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Out[72]//StandardForm=