HP 48G - Manual (Page 14)

Lesson 2: Mathematical Objects and the HP 48
The mathematical and scientific disciplines use a wide variety of
objects ill the process of describing and solving problems: real
numbers (sometimes with units attached), complex numbers, vectors,
matrices, functions, variables, eciuations, plots of many kinds, points,
sequences, words and sentences, programs, and so forth.
The HP 48 can use all of these objects and more:
Concept Example HP 48 Object
Real Nmnber 14.75 1 4 , , 7 5
. . . with Unit 4.75 m/s
1 4 „ 7 5 ^ . n / s
Complex Nimiber 3 + 4i < 3 , 4 )
. . . Polar Form < 5 ¿53 „ 1 )
Ordered Pair ( 4 , - 6 ) ( 4 - 6 )
Coordinate
(
8 . 2 5 , 1 2 . 1 ) < 8 , , 2 5 , 1 2 , . 1 )
Symbolic Constant 7 T ■ M ^
Variable ' '
Vector 4i + j - 3k [ 4 1 ........3 ]
... Polar Form L -"j =:::! =■!■ !i. >: b J
Matrix
3 -4 1
0 1 --2
l C 3 ......4 1 ]
C 0 1 ...... 2 ]]
Text String Begin here. " B e g i n h e r e , . ”
Labeled Quantity Volume is 6 . i 4 m l . VUL.” 6 ,, . 1 .
Equation 4x® — 5xy' = 9x + y ' 4*x"'^3•-"5e:^o;cy■■''■2=
9 * x + y '
Expression sin(.i:). ’ S I H ( x > '
Sequence 0 , 1 , 1 , 2 , 3 , 5 C 0 1 1 2 3 5 : >
Conunaiids Draw the plot DRAW
Program Find square roots. « 4 DUP NEC X
List !, “TWO", DRAW C >
2-2 Introducing the HP 48