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Theplum
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Solved!

Differential Equation Solver...

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HP Prime

Hi All,

 

      I would like to know how to use HP Prime to solve the following differential equation

 

    Equation.png

      I have tried to read the user manual, but with no luck.

 

Tim

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Maké
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Hi!, @Theplum:

 

Welcome, to Forum !. :generic:

 

If you learn correctly the use of desolve, you can see, better explained in the AUR HP50G, from ... 

[PDF]HP 50g / 49g+ / 48gII graphing calculator

h10032.www1.hp.com › ctg › Manual
 
Chapter, 3-56 and Chapter 16.

 

For HP PRIME ...

Note: G_0, is referred to differential equation, or first order.

IMG_20160830_114544.jpg

 

In Wolfram Alpha ...

IMG_20160830_114501.jpg

 

 

Kind Regards !.
Have a nice day !.
@Maké (Technical Advisor Premium - HP Program Top Contributor).
Provost in HP Spanish Public Forum ... https://h30467.www3.hp.com/
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Tim_Wessman
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Hello,

 

The command you want is "desolve". Before beginning, press the CAS key to move to the CAS environment. You can the command you need in toolbox->CAS->Solve->Differential Equation. Press the HELP key once you've selected it to see the built in help for that command.

 

Repalce dy/dx with y' in your equation. You can get the ' mark on the shift parenthesis key. It puts them in as a pair, so delete one. So your equation will be desolve(y'=2*x*y,y) and press ENTER.

 

 

TW

Although I work for the HP calculator group as a head developer of the HP Prime, the views and opinions I post here are my own.
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Theplum
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Wow these seem awesome. Thank you all!

 

But I have one more question...

If I type 2*x*y as 2xy, it will give me a different solution. Isn't it supposed that these two are the same? f0_o

 

Tim

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Tim_Wessman
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That is interpreted as 2*xy (a variable named 'xy'). When working in the CAS it is definitely best not to use implicit multiplication as it can be ambiguous.

TW

Although I work for the HP calculator group as a head developer of the HP Prime, the views and opinions I post here are my own.
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation