HP 30b - Business Professional Calculator Quick Start Manual page 26

Table 1-3 Keys and Descriptions
Keys
:l
:m
:n
:f
:g
:h
:i
:b
:c
:d
20 Getting Started
Description
Calculates natural exponent to the power of x.
Calculates square of x.
Calculates square root.
Executes the Random function. Returns a random number
in the range 0 < x <1.
Calculates factorial of x (where
Gamma function is used to calculate x! for non-integers or
negative numbers.
Calculates y to the x power.
Calculates the reciprocal.
nPr: the number of permutations of n items taken r at a
time.
nCr: the number of combinations of n items taken r at a
time
In Chain or Algebraic mode, recalls the result of the last
operation. In RPN mode, returns the content of the Last
Number variable.
< ≤
). The
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