TI-36X Pro—Replace the batteries or just get a new one?

[ijabbott]

The one proper bug I know about in the TI-36X Pro (and TI-30X Pro MultiView) has been fixed in the TI-30X MultiView.

To produce the bug:

1. Convert a number to a mixed number, for example: '1.75 math 1 enter' produces '1¾'. (This step is unnecessary if the mixed number conversion feature (math 1: n/d⇔Un/d) has been used at any time since the calculator was reset.)
2. Calculate '625π/4 enter' , producing 490.8738521.
3. Press the 'answer toggle' key (above the 'enter' key). The result is displayed as a mixed number '156␣π/4', i.e. '156 and pi quarters'. Obviously, this is nonsensical, although the calculator still holds the correct number internally.
4. Press the 'answer toggle' key again. The calculator displays 'SYNTAX ERROR'.
   

To fix this bug it is necessary to reset the calculator by holding the 'On' and 'clear' keys simultaneously. The calculator displays 'MEMORY CLEARED'. This clears all the settings and memories. Press 'clear' to clear the message. After resetting the calculator:

1. Calculate '625π/4 enter' , producing 490.8738521.
2. Press the 'answer toggle' key (above the 'enter' key). The result is displayed as a simple fraction of pi '625π/4'.
3. Press the 'answer toggle' key again. The result is 490.8738521.
   

The above bug has been fixed in the MathPrint model. It will never attempt to display a fraction of pi as mixed number.