Klogarithmic and exponential functions, Khyperbolic and inverse hyperbolic functions – Casio CFX-9970G Manual Calculations User Manual
Page 12
46
P.5
2 - 3
Function Calculations
k
k
k
k
k
Logarithmic and Exponential Functions
• Be sure to specify “Comp” for Calculation/binary, octal, decimal, hexadecimal
mode.
Example
Operation
Display
log 1.23 (log
10
1.23)
= 8.990511144
×
10
–2
l
1.23
w
0.08990511144
In 90 (log
e
90) = 4.49980967
I
90
w
4.49980967
10
1.23
= 16.98243652
(To obtain the antilogarithm
of common logarithm 1.23)
!0
1.23
w
16.98243652
e
4.5
= 90.0171313
(To obtain the antilogarithm
of natural logarithm 4.5)
!e
4.5
w
90.0171313
(–3)
4
= (–3)
×
(–3)
×
(–3)
×
(–3) = 81
(-
3
)
M
4
w
81
–3
4
= –(3
×
3
×
3
×
3) = –81
-
3
M
4
w
– 81
1
7
(= 123
7
)
123
= 1.988647795
7
!q
123
w
1.988647795
2 + 3
×
3
– 4 = 10
2
+
3
*
3
!q
64
-
4
w
*
1
10
64
*
1
^ (
x
y
) and
x
take precedence over multiplication and division.
k
k
k
k
k
Hyperbolic and Inverse Hyperbolic Functions
• Be sure to specify “Comp” for Calculation/binary, octal, decimal, hexadecimal
mode.
Example
Operation
Display
sinh 3.6 = 18.28545536
K6
(
g
)
2
(HYP)
1
(sinh)3.6
w
18.28545536
cosh 1.5 – sinh 1.5
K6
(
g
)
2
(HYP)
= 0.2231301601
2
(cosh)1.5
-1
(sinh)1.5
w
0.2231301601
=
e
–1.5
I!Kw
– 1.5
(Proof of cosh
x
±
sinh
x
=
e
±
x
)
cosh
–1
20
= 0.7953654612
K6
(
g
)
2
(HYP)
15
5
(cosh
–1
)
(
20
/
15
)w
0.7953654612
Determine the value of
x
when tanh
4
x
= 0.88
x
= tanh
-1
0.88
K6
(
g
)
2
(HYP)
4
= 0.3439419141
6
(tanh
–1
)0.88
/
4
w
0.3439419141
P.5