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Desolve with symbolic constants - Aleksandr94 - 07-23-2024 02:10 PM
Hallo!
How can I solve differential equations containing constant coefficient? Say I want to solve y"=y/a.
So I tried desolve(y"=y/a,x,y) without success.
So is it possible to do so using this calculator?
RE: Desolve with symbolic constants - parisse - 07-23-2024 04:28 PM
Type shift () to get '', instead of "
RE: Desolve with symbolic constants - bxparks - 07-23-2024 05:54 PM
(07-23-2024 04:28 PM)parisse Wrote: Type shift () to get '', instead of "
Which confused me for several seconds, because they looked almost identical in my font. If you missed it, the first is two single-quote characters (not including the comma character), and the second is the double-quote character.
RE: Desolve with symbolic constants - Aleksandr94 - 07-23-2024 05:55 PM
I did it. It didn't help.
RE: Desolve with symbolic constants - C.Ret - 07-23-2024 07:35 PM
Don't despair, try harder.
I mean with the correct secret keystrokes:
RE: Desolve with symbolic constants - Aleksandr94 - 07-24-2024 02:32 AM
(07-23-2024 07:35 PM)C.Ret Wrote: Don't despair, try harder.
I mean with the correct secret keystrokes:
I tried it. It didn't help. I recieved [] as answer.
RE: Desolve with symbolic constants - Gene222 - 07-25-2024 10:38 PM
Check to see if a user variable "a" was created. On the CAS screen, press the Vars key, tap the User tab, then tap User Variables. A list of user variables will appear. If there is a variable a, use the arrors keys to highlight the variable, and the press the backspace or correction key to delete the variable.
This might make desolve(y''=y/a,x,y) work on the CAS screen. As previously stated, use single quotes. As near as I can tell for your problem, there should not be any cas or user variables for x,y, or a.
RE: Desolve with symbolic constants - parisse - 07-26-2024 04:29 PM
Run the restart() command, this will insure all CAS variables are cleared.