C. 3:List
Press
.
Use
and
to select the menu of choice. 
Not all options are given in the entry format. Options that are used frequently will be included, but others are omitted from the table. For a complete format listing, you can check the TI89 manual. Results in complex mode are not covered. They can be found in the manual.
Operation

Entry Format

Explanation

Screen

1:seq  seq(expression, var, low,high [,step])  Returns a sequence
of values. Sequence begins at "low" and runs through "high". The default for the step is 1. 

2:min  min(expression1, expression2) min(list1,list2) min(matrix1,matrix2) 
Returns the minimum
of two arguments. 

3:max  max(expression1, expression2) max(list1,list2) max(matrix1,matrix2) 
Returns the maximum
of two arguments. 

4:SortA  listName1[,listName2],...  Sorts the elements
of the first argument in ascending order. The list must be named first; then sort the list; then you can display the list. 

5:SortD  listName1[,listName2],...  Same as SortA, except
that SortD sorts in descending order. 

6:sum  sum(list)  Returns the sum of
the list. This can also be used to find the sum of a sequence. 

7:cumSum  cumSum(list)  Returns a list of
the cumulative sums of the arguments in the list. It begins at the first element. 

8:product  product(list)  Returns the product
of the elements in the list. 

9:left 
left(sourceString [,num]) 
Returns the leftmost
"num" of characters in a string. The default is the entire string. The " key is . 

A:mid  mid(sourceString,start
[,count]) mid(sourceList,start [,count]) 
Returns "count"
characters from the list, beginning with element number start. 

B:right  right(list1 [ ,num])  Returns the rightmost
"num" characters in the list1. 

C:polyEval  polyEval(list1,expression1 polyEval(list1,list2) 
Interprets the first
argument as the coefficient of a polynomial. The degrees should be descending. Returns the polynomial evaluated for the value of the second argument. 

D:list>mat  list>mat(list [,elementsPerRow])  Returns a matrix filled
row by row with the elements in the list. The default for "elementsPerRow" is the number of elements in list. 

E:mat>list  mat>list(matrix)  Returns a list filled
with the elements in "matrix". The elements are copied row by row. 