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+--- Thread: No multi-statement 991CW—It’s peculiar (/thread-20350.html)
No multi-statement 991CW—It’s peculiar - Matt Agajanian - 08-20-2023 08:49 PM
Hi.
I’m thinking the pros here (all MoHPC folks) have more insights.
On the easy side, even both editions of the Casio fx-115ES feature the multi-statement : feature. So, if the CW and a 991 at that is supposed to be an up-step from the 115, why would Casio not feature the : multi-statement feature?
RE: No multi-statement 991CW—It’s peculiar - celltx - 08-25-2023 06:45 PM
(08-20-2023 08:49 PM)Matt Agajanian Wrote: I’m thinking the pros here (all MoHPC folks) have more insights.
Regarding the pros, it appears that CW series is more profitable for Casio, judging by the recent quarterly earnings report:
https://world.casio.com/content/dam/casio/global/corporate/en/ir/library/results/2024/briefing24_1st.pdf
RE: No multi-statement 991CW—It’s peculiar - Matt Agajanian - 08-25-2023 09:26 PM
(08-25-2023 06:45 PM)celltx Wrote:(08-20-2023 08:49 PM)Matt Agajanian Wrote: I’m thinking the pros here (all MoHPC folks) have more insights.
Regarding the pros, it appears that CW series is more profitable for Casio, judging by the recent quarterly earnings report:
https://world.casio.com/content/dam/casio/global/corporate/en/ir/library/results/2024/briefing24_1st.pdf
Best idea for me that I have reinforcement—Both 115ES Plus editions, 991ES Plus 2nd Edition, and the incredible 991EX.
RE: No multi-statement 991CW—It’s peculiar - Eddie W. Shore - 08-26-2023 01:06 AM
I guess that Casio thought the either the multi statement colon wasn't used enough or school restrictions.
RE: No multi-statement 991CW—It’s peculiar - toml_12953 - 08-26-2023 04:35 AM
(08-26-2023 01:06 AM)Eddie W. Shore Wrote: I guess that Casio thought the either the multi statement colon wasn't used enough or school restrictions.
At least the multi-statement : is still included in the fx-7400GIII, fx-9750GIII and fx-9860GIII
RE: No multi-statement 991CW—It’s peculiar - lrdheat - 08-26-2023 05:48 PM
Pardon my ignorance…what is a multi statement function? I wonder if the 991CW has a workaround…I can define g(x) to include a reference to f(x)…
RE: No multi-statement 991CW—It’s peculiar - Albert Chan - 08-26-2023 06:36 PM
Hi, Irdheat
Multi-statements is like a program.
Here is an example, calculating ellipse perimeter via AGM
note: for FX-115MS, B = √AB means B = √(A*B)
(01-23-2020 01:40 PM)Albert Chan Wrote:(01-21-2020 05:16 PM)Albert Chan Wrote: \(\large p(a,b) = 2× \left( p({a+b \over 2}, \sqrt{ab}) - {\pi a b \over AGM(a,b)}\right)\)
In other words, calculate ellipse perimeter from a much less eccentric ellipse.
Using my Casio FX-115MS, AGM2 method for Halley's comet, numbers from here
A = 2667950000
B = 678281900
C = A²
D = B²
E = 0.5
F=B-A : C=C-EF² : B=√AB : A=A+F/2 : E=2E
Keep pressing "=" until F=0 (so that A,B,C all converged)
\(\large\pi\)(C+D)/B → ellipse perimeter = 11,464,318,984.1 km
RE: No multi-statement 991CW—It’s peculiar - lrdheat - 08-26-2023 06:51 PM
Thanks!
RE: No multi-statement 991CW—It’s peculiar - Matt Agajanian - 08-27-2023 07:08 PM
(08-26-2023 06:36 PM)Albert Chan Wrote: Hi, Irdheat
Multi-statements is like a program.
Here is an example, calculating ellipse perimeter via AGM
note: for FX-115MS, B = √AB means B = √(A*B)
(01-23-2020 01:40 PM)Albert Chan Wrote: Using my Casio FX-115MS, AGM2 method for Halley's comet, numbers from here
A = 2667950000
B = 678281900
C = A²
D = B²
E = 0.5
F=B-A : C=C-EF² : B=√AB : A=A+F/2 : E=2E
Keep pressing "=" until F=0 (so that A,B,C all converged)
\(\large\pi\)(C+D)/B → ellipse perimeter = 11,464,318,984.1 km
Now I have another formula for my 115s & 991s. And a superb CALC example also.
Plus, it’ll make for another program for my 34, 67, and 42.