User's Manual

Function Graphing 3-25
8303FUNC.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:16 PM Printed: 02/19/01 1:35
PM Page 25 of 28
To display the
CALCULATE
menu, press
y
ã
CALCä
. Use the
items on this menu to analyze the current graph functions.
CALCULATE
1: value
Calculates a function Y value for a given X.
2: zero
Finds a zero (x-intercept) of a function.
3: minimum
Finds a minimum of a function.
4: maximum
Finds a maximum of a function.
5: intersect
Finds an intersection of two functions.
6: dy/dx
Finds a numeric derivative of a function.
7:
‰
f(x)dx
Finds a numeric integral of a function.
value evaluates one or more currently selected functions
for a specified value of
X.
Note:
When a value is displayed for
X
, press
‘
to clear the value.
When no value is displayed, press
‘
to cancel the
value
operation.
To evaluate a selected function at X, follow these steps.
1. Select
1:value from the
CALCULATE
menu. The graph is
displayed with
X= in the bottom-left corner.
2. Enter a real value, which can be an expression, for
X
between Xmin and Xmax.
3. Press
Í
.
The cursor is on the first selected function in the
Y=
editor
at the
X value you entered, and the coordinates are
displayed, even if
CoordOff format is selected.
To move the cursor from function to function at the
entered
X value, press
}
or
†
. To restore the free-moving
cursor, press
|
or
~
.
Using the CALC (Calculate) Operations
CALCULATE
Menu
value