Operation Manual

Chapter 2: Math, Angle, and Test Operations 65
MathPrint™:
Classic: items nCr number
Factorial
! (factorial) returns the factorial of either an integer or a multiple of .5. For a list, it returns factorials for
each integer or multiple of .5. value must be ‚L.5 and  69.
value!
Note: The factorial is computed recursively using the relationship (n+1)! = n…n!, until n is reduced to
either 0 or L1/2. At that point, the definition 0!=1 or the definition (L1à2)!=‡p is used to complete the
calculation. Hence:
n!=n…(nN1)…(nN2)… ... …2…1, if n is an integer ‚ 0
n!= n…(nN1)…(nN2)… ... …1à2…‡p, if n+1à2 is an integer ‚ 0
n! is an error, if neither n nor n+1à2 is an integer ‚ 0.
(The variable n equals
value in the syntax description above.)
randInt(
randInt( (random integer) generates and displays a random integer within a range specified by lower
and upper integer bounds. To generate a list of random numbers, specify an integer > 1 for numtrials
(number of trials); if not specified, the default is 1.
MathPrint™
Classic