HP 40G manual Keyboard functions

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.
>6+,)7@ex	Natural exponential. Also accepts complex numbers.
	e^value
	Example
	e^5 returns 148.413159103
>OQ@	Natural logarithm. Also accepts complex numbers.
	LN(value)
	Example
	LN(1) returns 0
>6+,)7@10x	Exponential (antilogarithm). Also accepts complex numbers.
	10^value
	Example
	10^3 returns 1000
>ORJ@	Common logarithm. Also accepts complex numbers.
	LOG(value)
	Example
	LOG(100) returns 2
>6,1@,>&26@,>7$1@	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 Using mathematical functions