On 2008-11-07 Edward McQue, wrote: Beware. If you try to enter a negative number and square it (hit the - number sign, enter a number like 3 and then hit the X2 button) it will show an answer of -9 (for my -3 squared example). It, obviously, should be positive 9. I called TI to report this bug and the lady said you have to put parenthesis around the - number and it works fine and it´s not a bug. I´m a software developer, that is a bug (undocumented feature). It also seems to work if you do minus sign, 3, = and then x2. It´s not intuitive, though.
The calculator seems to work otherwise and many in my daughter´s class have this model. She brought me her homework and said it didn´t look right. She was correct because the squares of the negatives were wrong!
My sharp scientific calculator calculates squares absolutely correctly.. And summed up by saying It doesn´t do squares correctly. Currently TEXTI30XIIB TI-30XIIB Scientific Calculator, Battery Operated, 10-Digit Display, Hard Case has an overall rating of 6 over 10.
TEXTI30XIIB TI-30XIIB Scientific Calculator, Battery Operated, 10-Digit Display, Hard Case can also be found in the following searches:
Texas Instruments, Inc claimed Display Characters x Lines10 x 2 Formula NotationAlgebraic Storage Memory5 Variable StatisticsTwo Levels of Parentheses23 Base Number Calculations Fraction Calculations Fraction/Decimal Conversions Probability (Random Numbers) Battery Powered Size3-3/8w x 6-3/8d Replacement Battery3.0V Lithium (EVEECR2032BP), sold separately Portable calculator with LCD display. Protective hard case and operating battery included. TEXTI30XIIB TEX-TI30XIIB 40033317198717 0033317198
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