have a problem in solving a numerical double integration, two variables dependent on each other, the boundary for one of them is known, but the other is not.
tried to sole it in mathcad but i think that there is an error in inputs, or how to put it in mathcad in the right manner
Did you just want these:
Or also values in between:
Careful, attached file is in Prime 4, you need prime 4 to read it!
but why you replace phi in the equation by s, the value of this equation is unit-less, my target is not to calculate phi, but a unit-less value depend on both theta and phi, so is that possible?
The default "unit" for angle in Mathcad is the radian. Since a radian is a ratio (length / length) it displays no units. You have a lot of unitless constants in your expression. If these are supposed to have units (length?) that may affect your results. You may choose to give an angle the unit degree, Mathcad will automatically convert from radians if you insert the unit: