Rk 83

Alright so this is going out to the creators of this app.personally I think its wonderful and Ive been reading good and bad reviews. But some if the bad ones are very right. This being a scientific calculator sets it apart from other calculators, including the one that comes with the iPods and iPhones, by graphing and using advanced mathematical functions. The first thing I did to tests its abilities was do some calculus and it wasnt anything complicated. I asked it to integrate x^3 between -3 And 3. Now any calculus student who has even taken only one term of calculus can tell you the answer without doing any math. The answer is 0 but this calculator doesnt say its 0. It says its some very small number close to 0.... Doesnt matter what the number is but if its not 0 its not correct. Calculus functionability needs to be fixed or else your calculator is no better than the one that comes with the all the devices despite graphing ability. Accuracy is better then precision especially being a developer trying to top a ti 83 which it appears you are trying to do.

Bosith about RK-83: Scientific Graphing Calculator