HP 39gs - Manual (Page 156)

13-4 Using mathematical functions
10 x
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).
ASIN Arc sine: sin –1 x. Output range is from –90° to 90°, –π/2
to π/2, or –100 to 100 grads. Inputs and outputs depend
on the current angle format. Also accepts complex
numbers.
ASIN(value)
Example
ASIN(1) returns 90 (Degrees mode).
ACOS Arc cosine: cos
–1
x. Output range is from 0° to 180°, 0 to
π, or 0 to 200 grads. Inputs and outputs depend on the
current angle format. Also accepts complex numbers.
Output will be complex for values outside the normal
COS domain of
.
ACOS(value)
Example
ACOS(1) returns 0 (Degrees mode).
1 – x 1 ≤ ≤
HP 39gs English.book Page 4 Wednesday, December 7, 2005 11:24 PM