Logarithmic And Exponential Functions - Casio fx-9860G Series User Manual

k Logarithmic and Exponential Functions
• Be sure to specify Comp for Mode in the Setup screen.
Example
log 1.23 (log 1.23) = 0.08990511144
10
log 8 = 3
2
In 90 (log 90) = 4.49980967
e
1.23
10 = 16.98243652
(To obtain the antilogarithm of common
logarithm 1.23)
e
4.5
= 90.0171313
(To obtain the antilogarithm of natural
logarithm 4.5)
= (–3) × (–3) × (–3) × (–3) = 81
(–3) 4
= –(3 × 3 × 3 × 3) = –81
–3 4
1
7
123 (= 123 ) = 1.988647795
7
2 + 3 ×
3 64 – 4 = 10
y x
x
1
* ^ ( ) and take precedence over
multiplication and division.
# You cannot use a differential, quadratic
differential, integration, Σ, maximum/minimum
value, Solve, RndFix or log ab calculation
expression inside of a log ab calculation term.
2-4-5
Function Calculations
l1.23w
<Line>
4(CALC)6( )4(log a b)2,8)w
<Math>
4(MATH)2(log a b) 2
I90w
x
!l(10
)1.23w
e x
!I(
)4.5w
(-3)
-3
4w
<Line>
x
7! (
<Math>
x
!
(
<Line>
2+3*3!
<Math>
2+3*!
# The Linear input mode and Math input mode
produce different results when two or more
powers are input in series, like: 2
Linear input mode: 2^3^2 = 64
Math input mode:
This is because the Math input mode internally
treats the above input as: 2^(3^(2)).
20070201
Operation
8w
4w
)123w
)7 123w
x
( )64-4w*
x
-4w
( )3 64
= 512
1
3 2.