Casio ClassPad 330, User Manual

Page: 117 / 954

20060301
2-2-2
Basic Calculations
U s ing the
,
Key
Use the
,
key to input exponential values. You can also input exponential values using the
$ key on the and keyboards.
Example s : 2.54 s 10
3
= 2540
ADC , B
U
1600 s 10
–4
= 0.16
\ @E??$C U
Omitting the Multiplication Sign
You can omit the multiplication sign in any of the following cases.
• In front of a function
Example s : 2sin (30), 10log (1.2)
• In front of a constant or variable
Example s : a
P
, 2ab, 3ans
• In front of an open parenthesis
Example s : 3(5 + 6), (a + 1)(b – 1)
Note that you must use a multiplication sign when the expression directly in front of the
open parenthesis is a literal variable. Example: ab (3 + b) must be written ab s (3 + b).
Otherwise, your input is considered to be in function notation (
f
(
x
)).
• In front of the
,
key or $ key (See “Using the
,
Key” above.)
• In front of a matrix or list
Example s : a {1, 2, 3}, 3 [[1, 2] [3, 4]]
U s ing the An s wer Variable (an s )
Any time you execute a calculation in the Main application work area, the last result is
assigned automatically to a variable named “ans” (answer). You can even recall current “ans”
variable contents and input them into another calculation by tapping the
# key as shown
below.
Example: 123 + 456 = 579 @ABCDE U
789 – 579 = 210 FGH # U
210
w
7 = 30 F U *
* Starting a calculation expression with +, −, ×, ÷, or ^ operator will cause the “ans”
variable to be inserted automatically to the left of the operator, even if you do not tap
the
# key. For more information, see “Performing Continuous Calculations” on
page 2-2-3.