Mathematica Tutorial: Notebooks And Documents - Wolfram Research

Notebooks and Documents 33Subscripts in Mathematica work very much like superscripts. However, whereas Mathematicaautomatically interprets x y as x raised to the power y, it has no similar interpretation for x y .Instead, it just treats x y as a purely symbolic object.This enters y as a subscript.In[6]:=x Ctrl+_ yOut[6]= x yHere is the usual one-dimensional Mathematica input that gives the same output expression.In[7]:=Subscript@x, yDOut[7]= x yx Ctrl+/ y Ctrl+Spaceuse control keysHow to enter a built-up fraction directly from the keyboard.This enters the built-up fraction x y .In[8]:=Out[8]=x Ctrl+/ yxyHere the whole y + z goes into the denominator.In[9]:=Out[9]=x Ctrl+/ y + zxy + zIn[10]:=Out[10]=But pressing Ctrl+Space takes you out of the denominator, so the +z does not appear in thedenominator.x Ctrl+/ y Ctrl+Space + zx+ zy