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Chapter 3: Manual Calculations
4. When done entering the known
values, press
@
h
. The
calculation result will be displayed on
the next screen.
Pressing
C
will bring back the
previous entry screen.
5. To go back to the TOOL menu to perform another calculation, press
@
V
.
C POLY
This tool is designed so that quadratic (
ax
2
+ bx + c = 0
) or cubic (
ax
3
+ bx
2
+ cx + d = 0
) equation may be solved.
1. Press
C
to select
C POLY, and
select the degree. For example,
press
2
if a quadratic equation
is desired.
2. In the next screen, an equation
ax
2
+
bx + c = 0
is displayed, with an entry
area for the known values —
a
,
b
,
and
c
.
3. Enter the values, as shown in the screen to the right. Pressing
E
at each entry will store the value, and sets the cursor at the next entry
area.
4. When done, press
@
h
to execute the calculation. The
results (i.e. the
x
-intersects) will be
displayed.
5. To enter a different set of numbers for a, b, and c, press
C
to go
back to the previous screen. To select a different degree of polynomial,
press
@
V
to go back to the TOOL menu.
• If the solution cannot be displayed on the screen, a symbol will appear
at the bottom left corner of the screen. Press
}
to scroll the screen.
