HP 30b Business Professional Calculator - Manual (Page 27)

Mathematical Calculations 19
Random number
Press
:f
to generate a randomly distributed number between 0 and 1.
Type a number and press
:$:f
to store a new seed for random number
generation.
The Math Menu
There are additional functions available in the Math menu. To open the Math menu, press
:s
. See Figure 8 for the menu map of the Math menu.
Table 2-4 Shifted Function Mathematical Operations
Keys Description
:p Calculates sine.
:q Calculates cosine.
:r Calculates tangent.
:k Calculates natural log.
:l Calculates natural exponent to the power of x.
:m Calculates square of x.
:n Calculates square root.
:f Executes the Random function. Returns a random number in the range 0 < x <1.
:g
Calculates factorial of x (where –253 < x < 253). The Gamma function is used to
calculate x! for non-integers or negative numbers.
:i Calculates the reciprocal.
:d In Chain or Algebraic mode, recalls the result of the last operation. In RPN mode,
returns the content of the Last Number variable.
:e Rounds x to the number specified by the display format.