Casio fx-991EX vs Hp 50g speed difference
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07-13-2018, 11:13 PM
Post: #3
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RE: Casio fx-991EX vs Hp 50g speed difference
(07-13-2018 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. (07-13-2018 08:50 PM)Tugdual Wrote: Pressing EVAL on the 50g returns instantly \( - \frac {1-e^{500}}{e^{500}} \) 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. (07-13-2018 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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