Sharp el-9950 - Page 102

101
Chapter 4: Graphing Features
06 N_line( Draws the normal line at the specified point of a graph
curve. Draws the orthogonal line of a tangent at the
specified point of a graph curve.
N_line(equation, x-value)
Example
• Drawthenormallineof
y = x
2
at
x = 1
.
1. SelectN_Line(.
2. Enter “x
2
,1)”on
the line.
3.Press
E
.
Note: It is also possible to
specify a function
equationfromY0
toY9ifstored.(N_
line(Y1,1))
T_line(
Example
•
Draw a tangential line by manually specifying the point.
1. SelectT_Line(.
2. Use
; '
to move the flashing cursor on the
targeted graph line.
Use
{ }
to select a graph to draw the
tangential line.
3. When the point is set at the tangent point, press
E
.
• Itisalsopossibletoinputthex-valueandpress
E
.
Note: The equation of the tangent line is displayed temporally.
(The equation may include a margin of error.)
FromtheGRAPH
window
FromtheCalculation
screen