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Pi π: π is displayed as 3.141592654, but π = 3.14159265358980 is used for
internal calculations.
Natural Logarithm Base e: e is displayed as 2.718281828, but e =
2.71828182845904 is used for internal calculations.
sin, cos, tan, sin
-1
, cos
-1
, tan
-1
: Specify the angle unit before performing
calculations.
sin 30° =
1
2
(Angle Unit: Degree)
30
1
2
sinh, cosh, tanh, sinh
-1
, cosh
-1
, tanh
-1
: Input a function from the menu that
appears when you press (Hyperbolic Func)*
1
. The angle unit setting
does not affect calculations.
*1 Depending on the calculation mode, you should press .
∘
,
r
,
g
: These functions specify the angle unit. ° specifies degree,
r
radian,
and
g
gradian. Input a function from the menu that appears when you
perform the following key operation: (Angle Unit)*
2
.
π/2 radians = 90° (Angle Unit: Degree)
(π)2(Angle Unit)(
r
)
90
*2 Depending on the calculation mode, you should press .
, : Exponential functions.
e
5
× 2 = 296.8263182
(MathI/MathO)
() 52
296.8263182
(LineI/LineO)
() 52
296.8263182
log: Logarithmic function. Use to input log
a
b as log (a, b). Base 10 is
the default setting if you do not input anything for a.
log
10
1000 = log 1000 = 3
1000
3
log
2
16 = 4
2(,) 16
4
The key also can be used for input, but only while MathI/MathO or
MathI/DecimalO is selected for Input/Output on the setup menu. In this
case, you must input a value for the base.
log
2
16 = 4
216
4
ln: Natural logarithm to base e.
ln 90 (= log
e
90) = 4.49980967
90
4.49980967
x
2
, x
3
,
,
,
,
, x
-1
: Powers, power roots, and reciprocals.
(1 + 1)
2+2
= 16
1122
16
(5
2
)
3
= 15625
5
15625
32
5
= 2
(MathI/MathO)
() 532
2
(LineI/LineO)
5() 32
2
2×3 =3 2= 4.242640687...
(MathI/MathO)
23
3
2
(LineI/LineO)
23
4.242640687
Pol, Rec: Pol converts rectangular coordinates to polar coordinates, while
Rec converts polar coordinates to rectangular coordinates.
13
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