M i e l – HP 38g Graphing Calculator User Manual
Page 50
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Keyboard
Functions
The most frequently used functions appear on the keyboard.
The keyboard functions are the only math functions that do
not appear in the MATH menu. Many of the keyboard
functions also accept complex numbers as arguments.
0.Q.0.0
Add, Subtract, Multiply, Divide. Also accept complex numbers.
value 1+ value2,
etc.
m i e l
Natural exponential. Also accepts complex numbers.
e''value
■ [LN]
Natural logarithm. Also accepts complex numbers.
IM [value]
■ [101
Exponential (antilogarithm). Also accepts complex numbers.
10''value
■ [LOG]
Common logarithm. Also accepts complex numbers.
LOG [value]
|SIN|,
|COS|,
Sine, cosine, tangent. Inputs and outputs depend on the current
|TAN|
angle format (Degrees, Radians, or Grads).
SIN(oo/ue)
COS [value]
TAN
[value]
■ [ASIN]
Arc sine : sin^'x Output ranges from -90° to 90°, -'ir/2 to
tt
/2,
or -100 to 100 grads. Inputs and outputs depend on the current
angle format.Also accepts complex numbers.
ASIN(UO/ue)
■ [ACOS]
Arc cosine: cos^'x. Output ranges from 0° to 180°, 0 to
tt
, or 0 to
200 grads. Inputs and outputs depend on the current angle
format. Also accepts complex numbers.
ACOS [value]
2-14 Mathematical Calculations