Hp 39g Graphing Calculator Uživatelský manuál Strana 66

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To find the
greater of the two
roots of the
quadratic
function
10. Find the greater of the two roots of the quadratic
function.
Note: Move the cursor to the graph of the quadratic
equation by pressing the 0 or key. Then move the
cursor so that it is near x = -\ by pressing the [►] or
f4~| key.
iSS Select Root
m
V
Root
Intersect ion
Slope
Signed area..,
Extremum
mam
The root value is
displayed at the bottom
of the screen.
RDDT: -X.5B5?B6S3?63
To find the
intersection of
the two functions
11. Find the intersection of the two functions.
Ivi .
V
iRoot 1
Intersection
Slope
Signed area...
Extremum
nmm HHIM
12. Choose the linear function whose intersection with the
quadratic function you wish to find.
;N
Fusing Fe>~K? and...^
K-fixis
The coordinates of the
intersection point are
displayed at the bottom
of the screen.
Note: If there is more
than one intersection (as
in our example), the coordinates of the intersection point
closest to the current cursor position are displayed.
I-SECT; t-1,3)
BBaai
3-4
Function aplet
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