2-4-6

Function Calculations

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.

kRandom 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.

uClassPad 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.

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