Texas Instruments TI-86 - Manual (Page 110)

98
Chapter 6: Graph Tools
06TOOLS.DOC TI-86, Chap 6, US English Bob Fedorisko Revised: 02/13/01 2:23 PM Printed: 02/13/01 3:01 PM Page 98 of 22 06TOOLS.DOC TI-86, Chap 6, US English Bob Fedorisko Revised: 02/13/01 2:23 PM Printed: 02/13/01 3:01 PM Page 98 of 22
Using ‰f(x), DIST, or ARC
The steps for using ‰ f(x) , DIST , and ARC are the same, except for the menu selection in step 1.
ᕡ Select DIST from the GRAPH MATH menu.
The current graph is displayed with a Left
Bound? prompt.
ᕢ Move the cursor onto the function on which
the left bound is a point.
6 /
& / )
# $
ᕣ Select the left bound for x . Either move the
cursor to the left bound or enter the x value.
Right Bound? is displayed.
! " b or
value
b
ᕤ ( DIST only) If you want the right bound to be
a point on another function, move the cursor
to the other function.
ᕥ Select the right bound. Either move the
cursor to the right bound or enter its x value.
# $
! " or
value
ᕦ Solve.
♦
For DIST , the solution DIST= is displayed
and stored in Ans .
♦
For ARC , the solution ARC= is displayed
and stored in Ans .
♦
For ‰ f(x) , the solution ‰ f(x)= is displayed,
b
shaded, and stored in Ans . The function integral error value is stored to the variable fnIntErr
(Appendix). To remove the shading, select CLDRW from the GRAPH DRAW menu (page 103).
In the example, the function
y(x)=x^3+.3x
2 N 4x is selected.
Steps 2 and 4 are not
necessary here because only
one function is selected.
For DIST, when you are
specifying the right bound, a
line is drawn from the left
bound to the right bound.