HP 30b Business Professional, Быстрый старт, Страница: 26 / 40

20 Getting Started
: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 ). The
Gamma function is used to calculate x! for non-integers or
negative numbers.
:h
Calculates y to the x power.
:i
Calculates the reciprocal.
:b
nPr: the number of permutations of n items taken r at a
time.
:c
nCr: the number of combinations of n items taken r at a
time
:d
In Chain or Algebraic mode, recalls the result of the last
operation. In RPN mode, returns the content of the Last
Number variable.
Table 1-3 Keys and Descriptions
Keys Description
253
–
x 253
≤ <