Texas Instruments TI-83 Series Manual page 10

14
TI-83/84 Plus Graphing Calculators For Dummies, Portable Edition
Connected or Dot:
In Dot mode, the calculator produces a graph by plotting
only the points it calculates. In Connected mode, the cal-
culator joins consecutively plotted points with a line.
My recommendation is to select the Connected mode
because each of the graphing options (Func, Par, Pol,
and Seq) allows you to select a graphing style, one of
which is the dot style.
Sequential or Simul:
In Sequential mode, the calculator completes the graph
of one function before it graphs the next function. In
Simultaneous (Simul) mode, the calculator graphs all
functions at the same time. It does so by plotting the
values of all functions for one value of the independent
variable, and then plotting the values of all functions for
the next value of the independent variable.
Simul mode is useful if you want to see whether two
functions intersect at the same value of the independent
variable. You have to watch the functions as they are
graphed in order to see if this happens.
Real, a + bi, or re^θi:
If you're dealing with only real numbers, select the Real
mode. If you're dealing with complex numbers, select a +
bi if you want the complex numbers displayed in rectan-
gular form. If you want complex numbers displayed in
polar form, select the re^θi mode.
Full, Horiz, or G-T:
The Full screen mode displays the screen as you see it
when you turn the calculator on. The other screen modes
are split-screen modes. The Horiz mode is for when you
want to display a graph and the Y= editor or the Home
screen at the same time. Use the G-T mode when you want
to display a graph and a table at the same time. (The split-
screen modes are explained in detail in Chapters 8 and 9.)
Set Clock:
This is where you set the clock on the calculator. To do
this, use the arrow keys to place the cursor on the SET
CLOCK option and press Õ. You see the second pic-
ture in Figure 1-2. You use the arrow keys to move from
item to item. To select items in the first, fifth, and eighth
rows, place the cursor on the desired item and press