Double Integration error with sin squared differential

[remslie]

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

[-MFra-]

Hi,

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

[remslie]

MFra,

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

Much appreciated. Regards,

Ross

[AlanStevens · Accepted solution]

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

Alan

[remslie]

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