Re: LaPlace Transforms in TI89 and HP48 compared by Perez-Franco


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Re: LaPlace Transforms in TI89 and HP48 compared by Perez-Franco



SPUI skrev i meddelelsen ...
>You missed another conclusion: the TI-89 is faster than the HP-48.

I dont think so - Erable came in a new version (v3.2). No more errors and
much faster. See below for times

Ice

Function 1): 1
HP48GX+Erable: Less than 1 (v3.2: 0.71 sec)
LaPlace P-F#1: Less than 1
LaPlace P-F#2: Less than 1
LaPlace elrond: Less than 1

Function 2): 3*sin(5*t)
HP48GX+Erable: 5 sec (v3.2: 1.22 sec)
LaPlace P-F#1: Aprox 1 sec
LaPlace P-F#2: Aprox 1 sec
LaPlace elrond: Aprox 1 sec

Function 3): 1+t+t^2+t^3
HP48GX+Erable: 5 sec (v3.2: 2.56 sec)
LaPlace P-F#1: Aprox 3 sec
LaPlace P-F#2: Aprox 3 sec
LaPlace elrond: 45 sec

Function 4): 2*sin(2*t)+3*sin(3*t)+4*sin(4*t)
HP48GX+Erable: 16 sec (v3.2: 4.20 sec)
LaPlace P-F#1: Aprox 3 sec
LaPlace P-F#2: Aprox 3 sec
LaPlace elrond: Aprox 3 sec

Function 5): 4+3*t^2+cos(5*t/3)
HP48GX+Erable: 9 sec (v3.2: 3.87 sec)
LaPlace P-F#1: Aprox 2 sec
LaPlace P-F#2: Aprox 2 sec
LaPlace elrond: Didn't finished in 6 minutes...

Function 6): 4*t*cos(3*t)
HP48GX+Erable: 6.5 sec (v3.2: 2.29 sec)
LaPlace P-F#1: 6 sec
LaPlace P-F#2: 7 sec
LaPlace elrond: 48 sec

Function 7): 4*t*cos(3*t+Pi/3)
HP48GX+Erable: (v3.2: 6.19 sec)
LaPlace P-F#1: 20 sec
LaPlace P-F#2: 22 sec
LaPlace elrond: 80 sec


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