Solved
adding all the elements in the array p3(y) i
I am using Mathcad Prime Release 8.0 and Datecode8.0.0.0
adding all the elements in the array p3(y) i.e all th eelements of the column
Here are the errors that I faced
adding all the elements in the array p3(y) i.e all th eelements of the column

