Sharp EL-9900 - Manual (Page 116)

106
Chapter 6: Advanced Graphing Features — Advanced Keyboard
T_line( equation, x-value)
Example
• Draw the tangental line of y = x 2 at x = 1.
1. Select T_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.
(T_line(Y1, 1))
T_line(
Example
• Draw a tangental 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
tangental line.
3. When the point is set at the tangent point, press
E.
V_Line
Example
• Draw a vertical line manually.
1. Press @ d A 4.
2. Use the cursor navigation keys ( { } ;
') to move the flashing cursor to the appropri-
ate position.
3. Press E to draw the line.
5 T_line( Draws a tangental line at the specified point of a graph
curve.
From the Calculation
screen
From the GRAPH
window
From the GRAPH
window