© Enter the formula number by depressing the formula designation key ( 3D, (EL
|2ndF| [3T| or |SS] m )■ (The symbol is displayed in upper part of the
display to show the designated formula number.)
(3) Enter the formula.
To correct mis-operation in the course of a formula entry, press the formula desij
nation key (Example: For formula 1, press the QE ) and enter the correc1
formula from the beginning.
@ Depress the ISSi and (ywj keys to end the formula entry.
(The symbol " Wiffi " disappear.)
Example 1:
x + 2y + 3z x = 20 y = 30 z = 40
Input Procedure: §5j |Sn) CPI
0 5 ) 2 S I S ] 3 [x ] I ® @ S
3. HOW TO USE A FORMULA:
Procedure:
Q Make sure that the symbol " 033 " or " EHsH" is not displayed. If the symbol " 1333
or " m a " is displayed, depress the §S[ (Dm) or (sig keys respectively.
50
© Depress the formula designation key. The symbol "9 " is displayed to show the
designated formula number and the calculation is started.
In case of above example 1:
Solution:
Press CU] Display: [1] Key in: 20
Press @U [2] Key in: 30
Press S I [3] Key in: 40
Press S Answer: 200
Press [1] (Enter new values for x, y, and z)
HOW TO CLEAR A FORMULA:
Procedure:
© Set the EL-512 at the LEARN mode by depressing the S and |5n] keys.
(When the symbol " BEG! " is displayed, skip this step.)
© To clear a formula:
Depress one of the formula designation keys. (Example: For formula 1, press the
o n .)
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