![Got ahold of a Casio fx-991ex and CG-50 to match my Classpad II. I'm really impressed with them but there is something about the fx-991ex... (see comments) : r/calculators Got ahold of a Casio fx-991ex and CG-50 to match my Classpad II. I'm really impressed with them but there is something about the fx-991ex... (see comments) : r/calculators](https://i.redd.it/cai3l1p9lr461.jpg)
Got ahold of a Casio fx-991ex and CG-50 to match my Classpad II. I'm really impressed with them but there is something about the fx-991ex... (see comments) : r/calculators
![Casio fx-991EX keeps giving math error for simple calculations like ((1/2)/2) and sin inverse (10) etc. Any idea on how to fix this? Is there a chance that the calculator may be Casio fx-991EX keeps giving math error for simple calculations like ((1/2)/2) and sin inverse (10) etc. Any idea on how to fix this? Is there a chance that the calculator may be](https://preview.redd.it/c3y0lcx0ody81.jpg?width=3000&format=pjpg&auto=webp&s=fbeca87556aad36f1c967016c1ccee9a5c323cf9)
Casio fx-991EX keeps giving math error for simple calculations like ((1/2)/2) and sin inverse (10) etc. Any idea on how to fix this? Is there a chance that the calculator may be
How fast is Casio FX-991EX ClassWiz as compared to other scientific non-programmable calculators? - Quora
![Displaying values when using a formula in Spreadsheet mode - Casio Classwiz fx-991EX fx-570EX - YouTube Displaying values when using a formula in Spreadsheet mode - Casio Classwiz fx-991EX fx-570EX - YouTube](https://i.ytimg.com/vi/LnVZnkyPjSg/maxresdefault.jpg)