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HP 15C and INT(1/√(1-x),0,1)
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HP 15C and INT(1/√(1-x),0,1)
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HP 15C and INT(1/√(1-x),0,1)
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01-08-2018, 04:07 PM
(This post was last modified: 01-09-2018 02:35 PM by salvomic.)
Post: #7
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RE: HP 15C and INT(1/√(1-x),0,1)
I could try a confrontation between a classic and a Limited edition HP15.
They started in the same instant, running to calculate the “not trivial” integral: ∫(1/(√(1-x)),0,1) that’s close 2. Both started with four digit precision (FIX 4). LE returned the results (1.9999) after about 3 mins, then it started again with 6 digit precision (FIX 6). After 50 mins the classic 15C (FIX 4) was still running, instead the LE (FIX 6) gave up with “Error 0” message ("Improper mathematics operation": why?) The code is: Code: After 75 mins the old HP15C is still running... At this time (after a pause) I start again LE with FIX5. After 25 mins LE returns 1.99999 and old HP15 still running (just now since 100 mins)... At the end I stopped HP15C (old) after about 2h without the result (with FIX4)... Besides the different speed, I wonder if the error in LE with FIX6 was only random or a limit for it (but I don't think)... Salvo ∫aL√0mic (IT9CLU) :: HP Prime 50g 41CX 71b 42s 39s 35s 12C 15C - DM42, DM41X - WP34s Prime Soft. Lib |
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