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HP 48gx

HP 48gx
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Step
4:
Move
the
cursor
to
#
=
0.3,
and
draw
the
line
tangent
to
the
function
at
that
point.
(»)
(7
times)
(to
redisplay
the
menu)
f\
|
THHL
Tee
dT
TAMLIME:
'Y=-1.4015%#-3.58402"
Example:
Determine
the
point
where
the
current
function
has
a
local
maximum
in
the
region
near
the
y-axis.
Step
1:
Magnify
the
display
to
show
the
target
region
more
clearly.
Move
the
cursor
to
one
corner
of
the
target
region
and
use
Box
Zoom.
(A)
(3
times)
(€)
(6
times)
(to
redisplay
the
menu)
FICT
ZOOM
BOXZ
(¥)
(5
times)
(»)
(12
times)
ef
[|
[thNcL[200K)
Step
2:
Execute
the
zoom,
move
the
cursor
near
the
local
maximum
point,
and
find
an
extremum.
Sa
=
UL
(»)
or
(4)
as
needed
nu
EXTRM:
(159483706477
.-3.91091B8662!
Step
3:
Return
to
the
stack.
Notice
that
each
of
the
analytic
functions
put
a
labeled
result
onto
the
stack.
(CANCEL)
(several
times)
Jt
Slope:
BYE
i
Leh
ine:
'Y=—1.40A1..
6477.3...
6-16
Plottina
Eauations
and
Analvzing
Graphs

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