HP 40gs - Manual (Page 163)

Using mathematical functions 13-9
→C
Convert from Fahrenheit to Celcius.
Example
→C(212) returns 100
→F
Convert from Celcius to Fahrenheit.
Example
→F(0) returns 32
→CM
Convert from inches to centimeters.
→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)
hp40g+.book Page 9 Friday, December 9, 2005 1:03 AM