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Integrals in solve app?
10-23-2014, 01:57 AM (This post was last modified: 10-23-2014 04:31 AM by Helge Gabert.)
Post: #10
RE: Integrals in solve app?
The integration variable should not show up in Solve Numeric View (this gives you the "Bad Guess(es)" message).

Try this: Enter the integral in Solve Symbolic View, but don't enter the equal sign - - stop right there (after the dX or whatever your variable of integration is) and press Enter (store in E1). Then, press the "Edit" touch key, enter the equal sign and the right hand expression, press Enter again. If you now go to the Solve Numeric View, is the integration variable still there? [You can also push the right arrow after the dX.]

It is possible that there is a "bug" in how the integral is stored in E1, . . . E9, E0. This can be seen in the plot window (soft key: Defn). If the "=" sign was entered in the first try in Solve Symbolic View (full equation), pressing the definition soft key shows that the integral is represented incorrectly.

[This is basically what Tim already described in the post above].

P.S. Regarding int() - - doesn't work in the solve app for me either - - use it in the CAS environment. fsolve in CAS is more powerful than the solve app anyway.
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Messages In This Thread
Integrals in solve app? - lrdheat - 10-21-2014, 07:22 PM
RE: Integrals in solve app? - Helge Gabert - 10-21-2014, 09:49 PM
RE: Integrals in solve app? - lrdheat - 10-22-2014, 01:54 AM
RE: Integrals in solve app? - lrdheat - 10-22-2014, 01:56 AM
RE: Integrals in solve app? - lrdheat - 10-22-2014, 02:25 AM
RE: Integrals in solve app? - Han - 10-22-2014, 03:27 AM
RE: Integrals in solve app? - DrD - 10-22-2014, 05:27 PM
RE: Integrals in solve app? - Han - 10-23-2014, 02:39 PM
RE: Integrals in solve app? - Tim Wessman - 10-22-2014, 04:29 PM
RE: Integrals in solve app? - lrdheat - 10-22-2014, 07:38 PM
RE: Integrals in solve app? - Helge Gabert - 10-23-2014 01:57 AM
RE: Integrals in solve app? - DrD - 10-23-2014, 04:10 PM



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