cannot calculate the magnitude of the normal vector to a cylinder

[rdelascasas]

This issue continues the same problem I presented yesterday. This calculation was also easy to do in Mathcad 15, but I am having trouble getting it to work in Prime 10.

I have marked the part of the calculation sheet that is not working in yellow.

You can see that I calculated the normal to be cylinder using symbolic calculation and tried to use it afterward to calculate the magnitude of the normal vector to be used down the sheet to calculate the total current. However, now Prime 10 does not recognize the results of the symbolic calculation to obtain the magnitude of the normal vector.

See the attached file.

Thank you in advance,

Rogelio

[Werner_E · Accepted solution]

Its a problem with Primes auto-labelling in combination with symbolic evaluations.

Turn on "Units/Constants in Symbolics" and then let the worksheet recalculate (press F9 or F5)

BTW, calculation of deltaIf calls gr three times, so the creation of the plot can be speeded up a bit by pre-calculating gr(...) and also by using less values at the abscissa:

For the calculation of It you first have to define the limits xminus and xplus. Calculation will take some time because of the double integral even if you used my slightly faster deltaIf2 function.

Prime 10 worksheet attached

[rdelascasas]

Thank you very much, Werner,

That was an easy fix. 😁

Kind regards,

Rogelio