Commodore Plus 4 - Numeric Functions

NUMERIC Included in your Plus/4 BASIC 3.5 language are numeric functions.
FUNCTIONS wn'cn are like lne advanced calculations found on most scientific cal
culators (such as sine, cosine, tangent, etc )
Most of the functions can be used by typing the name of the function
and the number to be operated by the formula in parentheses, like this.
FUNCTION(X)
For example, to find out the sine of a variable, you would type
PRINT SIN(X)
with X as any number you want to input
You could also include one of the functions in a program line, as the
following example shows.
10FORX=lTO5
20 PRINT "THE SQUARE ROOT OF": X;"IS"; SQR(X)
30 NEXT X
There is a complete listing of the numeric functions in the BASIC 3.5
Encyclopedia. Some of the more complex functions are explained in
the following paragraphs.
RANDOM
NUMBERS
AND
OTHER
FUNCTION
Selecting a random number is Itke taking 10 pieces of paper, writing a
number from 1 to 10 on each piece and putting the 10 pieces of paper
into a hat and drawing one piece of paper. The number chosen is a
RANDOM number. The number is put back into the hat. and another
number is drawn. Each time a number is drawn, it is put back in the hat.
keeping the pool of possible numbers the same. When a number is
selected, there is no way of knowing what number is going to come up
next, but you do know that the number will be between 1 and 10 This is
the basis of RANDOM NUMBERS
Random numbers are extremely useful in programming, providing the
element of chance or (obviously) randomness. Random numbers usu
ally have a range, meaning theres an upper limit and a lower limit to
the numbers you can draw. In the hat example, the range of numbers is
1 to 10. The lower limit is "1" and the upper limit is "10", which means
that any number from 1 to 10 can come up randomly each time a new
number is selected.
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