Sharp el-9950 - Page 68

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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.