HP 39g Graphing Calculator Betriebsanweisung Seite 64

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3-4 Function aplet
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 *k,or *e,key. Then move the
cursor so that it is near by pressing the *A,or
*>,key.
Select Root
The root value is
displayed at the bottom
of the screen.
To find the
intersection of
the two functions
11. Find the intersection of the two functions.
*e,
12. Choose the linear function whose intersection with the
quadratic function you wish to find.
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.
x 1=
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