HP HP-11C

Section 3: Numeric Functions 49
Pressing Calculates
(g][HYPT](cOS] Inverse hyperbolic cosine (cosh™’)
Hyperbolic tangent (tanh)
(g][HYPT](TAN] Inverse hyperbolic tangent (tanh’)
Example .
To Calculate Keystrokes Display
All hyperbolic functions;
for example:
Hyperbolic sine 2.53 2.53
(f)(HYP](SIN] 6.2369
Inverse hyperbolic sine 1.95 1.95
1.4210
Two-Number Functions
Your HP-11C’s two-number math functions use the values in the
displayed X-register and in the Y-register to calculate a result. To
use any of these functions, key in the Y-register value first, press
to lift the value into the Y-register, key in the displayed
X-register value, then execute the function.
Exponential
Pressing [y*]raises the number in the Y-register to the power of the
number in the X-register.
Example
To Calculate Di
" Keystrokes isplay
Exponential 2 2.0000
3 3
8.0000
Percentages
Percent. To find a specified percentage of a number:
1. Keyin the base number.
2. Press[ENTER].
3. Keyin the percent rate.
4. Press(9](%].