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Press f ALG. ALG is the f-shifted function of the EEX key, just above the double-size ENTER key. This will switch the 12C Platinum from RPN mode to Algebraic mode, and ALG indicator will light up instead of the RPN indicator.
To switch back to RPN, press f RPN. RPN is the f-shifted function of the CHS key just above the EEX key.
Press SHIFT [MODE] then down-arrow until you get to "Algebraic" or "Chain" depending on the current mode then INPUT until you get to "RPN." Press ON when done.
I checked the manual, the image of the face of the calculator and there is no way to change the entry mode from RPN to Algebraic. Your calculator is still in RPN, it is the only mode it has. Reset it.
I checked the manual, the image of the face of the calculator and there is no way to change the entry mode from RPN to Algebraic. Your calculator is still in RPN, it is the only mode it has. Reset it.
Assuming you have a 12C Platinum, press f [RPN] to switch from the algebraic to the RPN mode. [RPN] is the shifted function of the CHS key on the top row of the keyboard.
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