51
Type PRINT SQR (9). (press ENTER)
The answer is 3.
Example:
Y=9 : X=SQR(Y) : PRINT X
press
ENTER
The answer is 3.
In these two examples, 9 is the argument, SQR is the function and 3 is the result.
A LIST OF NUMERIC FUNCTIONS
Function
What it does
ABS
(X)
Returns the absolute (positive) Value of X
SGN
(X)
Returns the sign of the argument
X negative returns - 1
X positive r 1
X zero returns 0
SQR
(X)
Returns the square root of X. X cannot be negative.
LOG
(X)
Gives the natural logarithm of X, i.e.,
the logarithm to the base e (=2.71828).
The value of the argument must be greater than zero.
EXP
(X)
Gives you the value e
x
, i.e., the natural antilogarithm
of X.
INT
(X)
Gives the greatest integer which is less than or
equal to X.
RND
(X)
Gives a random whole number between 1 and X.
If X equals zero, RND (X) returns a random number
between 0 and 1. X cannot be negative.
SIN
(X)
The argument of the trigonometrical functions
COS
(X)
is taken to be in radians (1 radian=360/2
π
= 57.296 degrees).
TAN
(X)
The range of X is -999 < (X) < 999.
ATN
(X)
This gives the result of ARC TANGENT in radians.