HP 39gII - Page 167

Using mathematical functions 157
SATAN Arc tangent: tan
–1
x. Output range is from –90° to 90° or
–π/2 to π/2. Inputs and outputs depend on the current
angle format. Also accepts complex numbers.
ATAN(value)
Example:
ATAN(1) returns 45 (Degrees mode).
j Square. Also accepts complex numbers.
value
2
Example:
18
2
returns 324
S Square root. Also accepts complex numbers.
value or (expression)
Example:
returns 18
k Power (x raised to y). Also accepts complex numbers.
value^power
Example:
2^8 returns 256
S Nth root ( ). Takes the nth root of x.
root NTHROOT value
Example:
3 NTHROOT 8 returns 2
324
n
x
n