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R
remslie14-Alexandrite
14-Alexandrite
April 19, 2020
Solved

Double Integration error with sin squared differential

  • April 19, 2020
  • 2 replies
  • 2025 views

Hi,

I am trying to solve the following double integral equation in Mathcad (Equation 17 extracted from tech paper). see bottom of attached Mathcad sheet.

I get an "a name is required here" error when using the d(sin(q)2) i.e "d sine squared" in the differential. Can I use this d(sin(q)2)? Is there a trick to getting the syntax correct? Many Thanks Ross

Best answer by AlanStevens

MFra has beaten me to it, but my response below is essentially the same:

 

IntegrationTest.JPG

 

Alan

2 replies

-
-MFra-21-Topaz II
21-Topaz II
April 19, 2020

Hi,

Since the integration variables are theta and fi, the integration result is only a function of f. See next photo:

answer to remslie.jpg

R
remslie14-AlexandriteAuthor
14-Alexandrite
April 20, 2020

MFra,

Many thanks for your assistance and very prompt answer to my query.

Much appreciated. Regards,

Ross

A
AlanStevens19-TanzaniteAnswer
19-Tanzanite
April 19, 2020

MFra has beaten me to it, but my response below is essentially the same:

 

IntegrationTest.JPG

 

Alan

R
remslie14-AlexandriteAuthor
14-Alexandrite
April 20, 2020

Alan,

You have come to my rescue yet again! Thanks so much, I can ow continue with solving my proble.

I trust this find you well. Regards, Ross

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