CASIO fx-991CW

[lrdheat]

The extra internal digits allow for solutions on the CW that are not found on the EX. When integrating (x^4)/sqrt(x^10 -2) from 1.07178 to 3 (I used 1.07178 as 1.071773463^10=~2) comes up with 1.1663633, same as on fx-CG 50 (which, interestingly cannot do area under curve for that domain in graphing app). The EX throws a math error. The EX throws an error raising the lower endpoint to 1.0718, even throws error using 1.08!