Texas Instruments TITANIUM TI-89 - Manual (Page 812)

812 Appendix A: Functions and Instructions
4444DMS
MATH/Angle menu
expression 4444DMS
list 4444DMS
matrix 4444DMS
Interprets the argument as an angle and displays
the equivalent
DMS ( DDDDDD ¡ MM ¢ SS.ss £) number.
See ¡, ', " on page 910 for DMS (degree, minutes,
seconds) format.
Note: 4444DMS will convert from radians to degrees
when used in radian mode. If the input is
followed by a degree symbol (
¡ ), no conversion
will occur. You can use 4444DMS only at the end of
an entry line.
In Degree angle mode:
45.371 4DMS ¸ 45ó 22'15.6"
{45.371,60} 4DMS ¸
{45у 22'15.6" 60у }
dotP() MATH/Matrix/Vector ops menu
dotP( list1 , list2 )
⇒ ⇒ ⇒ ⇒ expression
Returns the “dot” product of two lists.
dotP({a,b,c},{d,e,f}) ¸
aø d + bø e + cø f
dotP({1,2},{5,6}) ¸ 17
dotP( vector1 , vector2 )
⇒ ⇒ ⇒ ⇒ expression
Returns the “dot” product of two vectors.
Both must be row vectors, or both must be
column vectors.
dotP([a,b,c],[d,e,f]) ¸
aø d + bø e + cø f
dotP([1,2,3],[4,5,6]) ¸ 32
DrawFunc CATALOG
DrawFunc expression
Draws expression as a function, using x as the
independent variable.
Note: Regraphing erases all drawn items.
In function graphing mode and ZoomStd
window:
DrawFunc 1.25xù cos(x) ¸
DrawInv CATALOG
DrawInv expression
Draws the inverse of expression by plotting x
values on the y axis and y values on the x axis.
x is the independent variable.
Note: Regraphing erases all drawn items.
In function graphing mode and ZoomStd
window:
DrawInv 1.25xù cos(x) ¸