Casio fx991EX vs Hp 50g speed difference

07132018, 11:13 PM
Post: #3




RE: Casio fx991EX vs Hp 50g speed difference
(07132018 08:50 PM)Tugdual Wrote: I'm a bit surprised the 50g performs so poorly since I doubt the fx991ex uses any smart CAS behind the scene. Any thoughts on that? I can't really say why the HP 50g takes awhile to get an approximate answer for the given integral. I do know that if you take it out of Standard format and put it into a smaller number format like Fix 4, it would get a numeric answer quicker with an accuracy up to the given number format. But you probably knew that already. (07132018 08:50 PM)Tugdual Wrote: Pressing EVAL on the 50g returns instantly \(  \frac {1e^{500}}{e^{500}} \) which seems to indicate that CAS was used since this is the exact result. Weird right? The difference between Exact and Approx. speeds in this case is very interesting and I don't know why that is. I get the answer in 0.70 milliseconds if I want an exact result. And when I press >NUM on the exact result, it solves the exact answer in .06 milliseconds. This means I can get the approximate result of the integral in .76 milliseconds, beating the Casio. But every attempt to solve the integral approximately, I get a 47 second wait. I'm sorry, I don't have a guess on why it does this. (07132018 10:36 PM)StephenG1CMZ Wrote: On HP Prime I get result 1(1/e^500), in 20 ms (Android), using CAS. The Prime is great isn't it? But the 50g getting the same answer in .70 milliseconds is also impressive to me. 

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