HP 39gs - Manual (Page 161)

Using mathematical functions 13-9
→IN
Convert from centimeters to inches.
→L
Convert from US gallons to liters.
→LGAL
Convert from liters to US gallons.
→KG
Convert from pounds to kilograms.
→LBS
Convert from kilograms to pounds.
→KM
Convert from miles to kilometers.
→MILE
Convert from kilometers to miles.
→DEG
Convert from radians to degrees.
→RAD
Convert from degrees to radians.
Hyperbolic trigonometry
The hyperbolic trigonometry functions can also take
complex numbers as arguments.
ACOSH Inverse hyperbolic cosine : cosh –1 x.
ACOSH(value)
ASINH Inverse hyperbolic sine : sinh
–1 x.
ASINH(value)
ATANH Inverse hyperbolic tangent : tanh
–1 x.
ATANH(value)
COSH Hyperbolic cosine
COSH(value)
SINH Hyperbolic sine.
SINH(value)
TANH Hyperbolic tangent.
TANH(value)
ALOG Antilogarithm (exponential). This is more accurate than
10^x due to limitations of the power function.
ALOG(value)
HP 39gs English.book Page 9 Wednesday, December 7, 2005 11:24 PM