Equa diff Help
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01-01-2014, 04:57 PM
Post: #1
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Equa diff Help
Hello, on HP Prime, when i enter in CAS mode :
deSolve(y+2E-3*y'=0 AND y(0)=10,y) I get an error "bad arguments". How to define the diff operator ' or diff() ? Is there a special key to ' ? Thanks for your help. JC |
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01-01-2014, 05:18 PM
Post: #2
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RE: Equa diff Help
(01-01-2014 04:57 PM)jc_63 Wrote: Hello, on HP Prime, when i enter in CAS mode : In CAS mode, use 2*10^(-3) and not 2E-3. Graph 3D | QPI | SolveSys |
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01-01-2014, 05:46 PM
Post: #3
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RE: Equa diff Help
It's OK when i enter :
desolve(y+2E-3*diff(y)=0 AND y(0)=10,y) > 10*e^(-500*x) y' is not correct ! Thanks, JC |
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01-02-2014, 09:04 PM
Post: #4
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RE: Equa diff Help
I've found : the ' is in Chars (Shift Vars) and y' is correctly coded as diff().
With Shift 9, the ' is not the same but minute (angle unit). It is a source of error ! JC |
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01-02-2014, 09:31 PM
Post: #5
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RE: Equa diff Help
(01-02-2014 09:04 PM)jc_63 Wrote: I've found : the ' is in Chars (Shift Vars) and y' is correctly coded as diff(). An easier way to get ' is to use [Shift][ () ] and delete the extra tic mark. Graph 3D | QPI | SolveSys |
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