Casio fx-991EX vs Hp 50g speed difference
07-25-2018, 10:13 PM
Post: #15
 Albert Chan Senior Member Posts: 1,896 Joined: Jul 2018
RE: Casio fx-991EX vs Hp 50g speed difference
(07-25-2018 06:32 PM)Albert Chan Wrote:  Just integrate above transformed f, from -1 to 1:

$$\int_0^{200}sin(x) dx$$ = $$\int_{-1}^{1}150(1-u^2) sin[50u (3 - u^2) + 100] du$$
(07-25-2018 02:44 AM)Carsen Wrote:  When I enter the integral in approx. mode, I get the answer of 0.512812324889 in 111.36 seconds with an error of 1.3E-9.
(07-25-2018 08:07 PM)Carsen Wrote:  If I evaluate the transformed integral in approx. mode, I get the answer of .512812325001 in 61.45 seconds.

For transformed integral, it only take half the time ?
And, compare against 1 - cos(200), more accurate ?

Is it tested on the same calculator ?

What if it were applied not just to periodic function, but others ?
Say, this thread original post ?

$$\int_0^{500}e^{-x}dx$$ = $$\int_{-1}^{1}375(1-u^2) e^{-(125u (3 - u^2) + 250)} du$$
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 Messages In This Thread Casio fx-991EX vs Hp 50g speed difference - Tugdual - 07-13-2018, 08:50 PM RE: Casio fx-991EX vs Hp 50g speed difference - StephenG1CMZ - 07-13-2018, 10:36 PM RE: Casio fx-991EX vs Hp 50g speed difference - Carsen - 07-13-2018, 11:13 PM RE: Casio fx-991EX vs Hp 50g speed difference - Thomas Okken - 07-14-2018, 01:45 AM RE: Casio fx-991EX vs Hp 50g speed difference - Albert Chan - 07-14-2018, 03:17 AM RE: Casio fx-991EX vs Hp 50g speed difference - pier4r - 07-14-2018, 10:27 AM RE: Casio fx-991EX vs Hp 50g speed difference - ijabbott - 07-14-2018, 03:10 PM RE: Casio fx-991EX vs Hp 50g speed difference - Tugdual - 07-16-2018, 07:07 AM RE: Casio fx-991EX vs Hp 50g speed difference - brickviking - 07-18-2018, 04:28 AM RE: Casio fx-991EX vs Hp 50g speed difference - Albert Chan - 07-25-2018, 01:50 AM RE: Casio fx-991EX vs Hp 50g speed difference - Albert Chan - 07-25-2018, 12:55 PM RE: Casio fx-991EX vs Hp 50g speed difference - Carsen - 07-25-2018, 02:44 AM RE: Casio fx-991EX vs Hp 50g speed difference - Albert Chan - 07-25-2018, 06:32 PM RE: Casio fx-991EX vs Hp 50g speed difference - Carsen - 07-25-2018, 08:07 PM RE: Casio fx-991EX vs Hp 50g speed difference - Albert Chan - 07-25-2018 10:13 PM RE: Casio fx-991EX vs Hp 50g speed difference - Carsen - 07-26-2018, 03:01 AM RE: Casio fx-991EX vs Hp 50g speed difference - Carsen - 07-26-2018, 04:53 PM RE: Casio fx-991EX vs Hp 50g speed difference - Albert Chan - 07-26-2018, 03:28 AM RE: Casio fx-991EX vs Hp 50g speed difference - Albert Chan - 07-26-2018, 07:08 PM RE: Casio fx-991EX vs Hp 50g speed difference - gomefun2 - 09-03-2018, 07:40 PM

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