First• First[expr] gives the first element in expr. • First[expr] is equivalent to expr[[1]].
• See also: Last, Part, Select, Take.
Examples Using InstantCalculatorsHere are the InstantCalculators for the First function. Enter the parameters for your calculation and click Calculate to see the result This gives the first element of a list.
Out[1]= |  |
This gives the first row of a matrix.
Out[2]= |  |
Entering Commands DirectlyYou can paste a template for this command via the Text Input button on the First Function Controller. This gives the first element from the list.
Out[3]= |  |
This gives the first row from the matrix.
Out[4]= |  |
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