14
Getting started
Explicit and
implicit
multiplication
Implied
multiplication takes place when two operands
appear with no operator in between. If you enter
AB
, for
example, the result is
A*B
.
However, for clarity, it is better to include the
multiplication sign where you expect multiplication
in an
expression. It is clearest to enter
AB
as
A*B
.
Parentheses
You need to use parentheses to enclose arguments for
functions, such as SIN(45). You can omit the final
parenthesis at the end of an edit line. The calculator
inserts it automatically.
Parentheses are also important in specifying the order of
operation.
Without
parentheses, the HP 39gII calculates
according to the order of
algebraic precedence
(the next
topic). Following are some examples using parentheses.
l
4
S
EEX
-
13
m
sl
6
S
EEX
23
m
n
3
S
EEX
-
5
E
Entering...
Calculates...
e
45
+S
π
sin (45 +
π
)
e
45
m+S
π
sin (45) +
π
Sj
85
s
9
Sjl
85
s
9
m
85
9
×
85
9
×
Содержание 39gII
Страница 1: ...HP 39gII graphing calculator user s guide Edition1 Part Number NW249 90001 ...
Страница 2: ...Printing History Edition 1 November 201 1 ...
Страница 32: ...22 Getting started ...
Страница 58: ...48 Apps and their views ...
Страница 70: ...60 Function app ...
Страница 80: ...70 Solve app ...
Страница 132: ...122 Parametric app your own table and the split screen functionality available in the Function app ...
Страница 136: ...126 Polar app ...
Страница 140: ...130 Sequence app ...
Страница 148: ...138 Finance app ...
Страница 152: ...142 Linear Solver app ...
Страница 218: ...208 Matrices ...
Страница 226: ...216 Notes and Info ...
Страница 238: ...228 Variables and memory management ...
Страница 318: ...308 Programming ...
Страница 340: ...330 Reference information ...
Страница 346: ...vi Product Regulatory Information ...