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Stephen Wolfram
SEARCH MATHEMATICA 8 DOCUMENTATION
THIS IS DOCUMENTATION FOR AN OBSOLETE PRODUCT.
SEE THE
DOCUMENTATION CENTER
FOR THE LATEST INFORMATION.
Mathematica
>
Parts of Expressions
>
Built-in
Mathematica
Symbol
Getting Pieces of Lists
Tutorials »
|
Part
Last
Rest
Take
Select
See Also »
|
Elements of Lists
List Manipulation
Parts of Expressions
More About »
First
First
[
expr
]
gives the first element in
expr
.
MORE INFORMATION
First
[
expr
]
is equivalent to
expr
[[1]]
.
EXAMPLES
CLOSE ALL
Basic Examples
(3)
Extract the first element of a list:
In[1]:=
Out[1]=
Extract the first row of a matrix:
In[1]:=
Out[1]=
The head need not be
List
:
In[1]:=
Out[1]=
Generalizations & Extensions
(1)
Properties & Relations
(1)
Possible Issues
(2)
SEE ALSO
Part
Last
Rest
Take
Select
TUTORIALS
Getting Pieces of Lists
MORE ABOUT
Elements of Lists
List Manipulation
Parts of Expressions
New in 1
© 2013 Wolfram Research, Inc.
EXAMPLES
Basic Examples 
Generalizations & Extensions 