7-10 Combining with the Function
Memory
A practical
method
of
using the DATA BANK function
is
to
use it in combina-
tion with the
Function
Memoiy. Store formulas and equations in the DAT A
BANK and press the
~
key
to
call the desired formula or equation. And
calculate
by
storing the retrieved formula in the Function Memory by pressing
the
~key.
Assume
that
the following formula and equation are stored in the DAT A BANK.
1
QUADRATIC
EQUATION
r
X=<-B+SQR(Bf2-4*A*Cll/(2*A>:
X=<-B-SQR<B
2
t2-4*A*Cll/(2*A>
3
HERON
4
s·s·=<A+B+Cl/2:S=SQR<S*<S-A>*<S-B>*<S-C))
A formula
to
calculate the root
of
a quadratic equation and Heron's formula are
stored
in
the DATA BANK.
Now, calculate the root
of
the quadratic equation. Press
(Q]~
to
search the
quadratic equation.
After confirming the name, press
the~
key and the calculation formula
is
dis-
played.
IX=(-B+SQR(Bt2-4+A+C))/(21
Then store the calculation formula in the Function Memory.
201
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