20050501
Problem
Use this keyboard:
Operation
mth abc cat 2D
What is the sign of Func [signum] - 3.4567 w
–3.4567? –1
(signum returns –1 for a
negative value, 1 for a
positive value, “Undefined”
for 0, and
A
for an
A
imaginary number.)
What is the integer part of CALC Func - 3.4567 w
–3.4567? –3
What is the decimal part of Func [frac] - 3.4567 w
–3.4567? –0.4567
What is the greatest integer Func [intg] - 3.4567 w
less than or equal to
–3.4567? –4
What is –3.4567 rounded to Func [fRound] - 3.4567 , 2
two decimal places? –3.46 w
What is –34567 rounded to Func [sRound] - 34567 , 4
four significant digits? w*
–34570
*To round to 10 digits, specify “0” for the second argument.
k Random Number Generator (rand, randList, RandSeed)
• The ClassPad random number generator can generate truly random numbers (non-
sequential random numbers) and random numbers that follow a particular pattern (sequen-
tial random numbers). Using the “randList” function, you can generate a list whose
elements contain random numbers. There are nine different patterns for generation of
sequential random numbers. Use the “RandSeed” command to switch between non-
sequential and sequential random number generation, and to select the sequential random
number generation pattern.
u ClassPad Operation
(1) Use the “RandSeed” command to configure random number generation settings, if
required.
(2) Use the “rand” function or “randList” function to generate the random numbers.
2-4-6
Function Calculations
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