HP 33S - Page 371

Operation Index
G–19
File name 33s-English-Manual-040130-Publication(Edition 2).doc Page : 388
Printed Date : 2004/1/30 Size : 13.7 x 21.2 cm
Name Keys and Description Page 
x
≠
0
?
º 
{
≠
}
If x
≠
0, executes next program line;
if x=0, skips the next program
line.
13–7
x
≤
0
?
º 
{
≤
}
If x
≤
0, executes next program line;
if x>0, skips next program line.
13–7
x<0
?
º 
{<}
If x<0, executes next program
line;
if x
≥
0, skips next program line.
13–7
x>0
?
º 
{>}
If x>0, executes next program
line;
if x
≤
0, skips next program line.
13–7
x
≥
0
?
º 
{
≥
}
If x
≥
0, executes next program line;
if x<0, skips next program line.
13–7
x=0
?
º 
{=}
If x=0, executes next program
line;
if x
≠
0, skips next program lire:
13–7
y
º (
{

}
Returns the mean of y values.
Σ
y
i
÷
n.
11–4 1
y
ˆ
º %
{

ˆ
}
Given an x–value in the
X–register, returns the y–estimate
based on the regression line:
y
ˆ
= m x + b.
11–10 1
y,x

θ
,r
¹ °
Rectangular to polar
coordinates. Converts (x, y) to (r,
θ
).
4–10