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Promblem with integration
03-16-2016, 07:49 PM (This post was last modified: 03-16-2016 08:29 PM by toshk.)
Post: #5
RE: Promblem with integration
(03-16-2016 06:34 PM)Tim Wessman Wrote:  Since there is no exact closed form answer here (not without using some stuff not supported in any calculator), it returns the input unevaluated. Two ways to get a numeric approximation.

1. Press SHIFT-ENTER (to run approx( ) on your last input)
2. Put a "." in one of your limits. int(sin(x^2),0.,8) <-- note the 0. and not just 0

Both of those will immediately evaluate a decimal result.

The reason it works in HOME as stated already is that the X variable is an approximate valued number. Hence, it is just like putting the "0." in the second option as it triggers the approximate numerical calculation.

there is a close form to these integrations (Mathematically) but not for someone who just want numerical answer directly.

give a little push to Prime, and one can find the close form..or they shd be implemented into Prime if there is a need...
http://www.wolframalpha.com/input/?i=int...9,x,0,8%29
   
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Messages In This Thread
Promblem with integration - Annaguseva - 03-16-2016, 02:14 PM
RE: Promblem with integration - toshk - 03-16-2016, 05:28 PM
RE: Promblem with integration - toshk - 03-16-2016 07:49 PM
RE: Promblem with integration - Annaguseva - 03-16-2016, 07:03 PM
RE: Promblem with integration - Anders - 03-16-2016, 10:07 PM
RE: Promblem with integration - Wes Loewer - 03-17-2016, 05:36 PM
RE: Promblem with integration - parisse - 03-17-2016, 06:54 AM
RE: Promblem with integration - salvomic - 10-29-2017, 06:52 PM
RE: Promblem with integration - Anders - 03-17-2016, 11:09 PM
RE: Promblem with integration - parisse - 03-18-2016, 01:25 PM
RE: Promblem with integration - Anders - 03-18-2016, 05:26 PM
RE: Promblem with integration - parisse - 03-19-2016, 11:46 AM



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