2. Formula Entry II Dialogic Form
The second procedure for formula entry involves placing an equation into the calculator as a function of
the variables in the formula. The function key f ( ) = is above the [35] key. Start with the f ( ) = key,
follow with the variables, close with the f ( ) = key,
Solve 3 equations: X2 + Y2, 23 X + 45 Y, s/x - LN Y
Let X = A, Y = B
Key in: a. (2nd F) E B
(2nd F) 1*0=1 display should read 1; f (
b. AB (2nd F) (EE) display should read 1; f (AB) =
in other words, a function of variables A and B
c. A2 C B B2, 23A C B 45B, B A H E B B
Note that as you enter the letter A in the third equation, the 24 character capacity of the display is
exceeded. The rolling writer begins and as each additional entry is made an entry is rolled off to the left
and stored. The left pointing arrow indicates information stored to the left.
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