Texas Instruments TI-84 PLUS - Graphing Calculator Manual Book page 364

Function or
Instruction/Arguments
cumSum(list)
cumSum(matrix)
dayOfWk(year,month,
day)
dbd(date1,date2)
DEC Answers
value Dec
4
Degree
DelVar variable
DependAsk
DependAuto
det(matrix)
DiagnosticOff
DiagnosticOn
dim(listname)
dim(matrixname)
Result
Returns a list of the cumulative sums of the elements in
list, starting with the first element.
Returns a matrix of the cumulative sums of matrix
elements. Each element in the returned matrix is a
cumulative sum of a matrix column from top to bottom.
Returns an integer from 1 to 7, with each integer
representing a day of the week. Use dayOfWk( to
determine on which day of the week a particular date
would occur. The year must be 4 digits; month and day can
be 1 or 2 digit.
Calculates the number of days between date1 and date2
using the actual-day-count method.
Displays answers as integers or decimal numbers.
Displays a real or complex number, expression, list, or
matrix in decimal format.
Sets degree angle mode.
Deletes from memory the contents of variable.
Sets table to ask for dependent-variable values.
Sets table to generate dependent-variable values
automatically.
Returns determinant of matrix.
Sets diagnostics-off mode; r, r
as regression model results.
Sets diagnostics-on mode; r, r
regression model results.
Returns the dimension of listname.
Returns the dimension of matrixname as a list.
2 2
, and R are not displayed
2 2
, and R are displayed as
Appendix A: Functions and Instructions
Key or
Keys/Menu or
Screen/Item
y 9
OPS
6:cumSum(
y >
MATH
0:cumSum(
y N
dayOfWk(
1:Sunday
2:Monday
3:Tuesday...
Œ
1:Finance
CALC
D:dbd(
z
Answers: DEC

MATH
2: 4 Dec
z
†
Degree

†
CTL
G:DelVar
y -
†
Depend: Ask
y -
†
Depend: Auto
y >
MATH
1:det(
y N
DiagnosticOff
y N
DiagnosticOn
y 9
OPS
3:dim(
y >
MATH
3:dim(
357