Keyboard Functions - HP 40G User Manual

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Keyboard functions

The most frequently used functions are available directly from
the keyboard. Many of the keyboard functions also accept
complex numbers as arguments.
, , ,
Add, Subtract, Multiply, Divide. Also accepts complex
numbers, lists and matrices.
value1+ value2, etc.
x
e
Natural exponential. Also accepts complex numbers.
e^value
Example
e^5 returns 148.413159103
Natural logarithm. Also accepts complex numbers.
LN(value)
Example
LN(1) returns 0
x
10 Exponential (antilogarithm). Also accepts complex numbers.
10^value
Example
10^3 returns 1000
Common logarithm. Also accepts complex numbers.
LOG(value)
Example
LOG(100) returns 2
, ,
Sine, cosine, tangent. Inputs and outputs depend on the
current angle format (Degrees, Radians, or Grads).
SIN(value)
COS(value)
TAN(value)
Example
TAN(45) returns 1 (Degrees mode).
10-4
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Using mathematical functions