Can someone do a calculation on a TI Inspire CAS?
02-09-2019, 11:38 PM
Post: #17
 berndpr Junior Member Posts: 32 Joined: Jan 2019
RE: Can someone do a calculation on a TI Inspire CAS?
Hello!

If you are using the sin(pi) on a TI-nspire you get zero.

But I think, the value of 3.1415926534 for pi is not a good choice.
For calculation in real world physics normally you don't need so many significant digits, so I think using pi directly is ok.

And I have tried several calcs:
DM-42: 1.897932384626433832783634455164435e-10
DM-15: 5.9e-10
fx-991DE PLUS: 1.898e-10
HP-300s+: 1.898e-10
numworks: 1.8997932e-10
HP-35s: 1.89793238e-10
2DS: 0
I have input the number from the last post 3.1415926534 (and not 3.141592654) with all digit if possible.
As you can see one digit more, you get a result half as big as the other (-4.102069e-10 by numworks).
So I think rounding to 0 is fine for real world problems.
That's the reason HP choice FIX 4 as default for many calcs.
Bernd
 « Next Oldest | Next Newest »

 Messages In This Thread Can someone do a calculation on a TI Inspire CAS? - zeno333 - 01-29-2019, 01:21 AM RE: Can someone do a calculation on a TI Inspire CAS? - zeno333 - 01-29-2019, 02:41 AM RE: Can someone do a calculation on a TI Inspire CAS? - pier4r - 01-29-2019, 11:56 AM RE: Can someone do a calculation on a TI Inspire CAS? - toml_12953 - 01-29-2019, 04:53 PM RE: Can someone do a calculation on a TI Inspire CAS? - zeno333 - 01-30-2019, 02:34 AM RE: Can someone do a calculation on a TI Inspire CAS? - Benjer - 01-29-2019, 03:11 AM RE: Can someone do a calculation on a TI Inspire CAS? - grsbanks - 01-29-2019, 06:07 AM RE: Can someone do a calculation on a TI Inspire CAS? - zeno333 - 01-30-2019, 02:32 AM RE: Can someone do a calculation on a TI Inspire CAS? - Dieter - 01-30-2019, 09:07 AM RE: Can someone do a calculation on a TI Inspire CAS? - ThomasA - 01-29-2019, 06:37 AM RE: Can someone do a calculation on a TI Inspire CAS? - EdS2 - 01-29-2019, 07:58 AM RE: Can someone do a calculation on a TI Inspire CAS? - grsbanks - 01-29-2019, 08:23 AM RE: Can someone do a calculation on a TI Inspire CAS? - Albert Chan - 01-29-2019, 05:09 PM RE: Can someone do a calculation on a TI Inspire CAS? - ijabbott - 01-29-2019, 04:21 PM RE: Can someone do a calculation on a TI Inspire CAS? - ijabbott - 01-29-2019, 09:01 PM RE: Can someone do a calculation on a TI Inspire CAS? - EdS2 - 01-30-2019, 09:18 AM RE: Can someone do a calculation on a TI Inspire CAS? - berndpr - 02-09-2019 11:38 PM

User(s) browsing this thread: 1 Guest(s)