There are Two regions Region 1: (2x +3y 1), Region 2: (2x+3y1). Given that the magnetic field around the boundary is H2=50(ax)-30(ay)-10(az).

There are Two regions Region 1: (2x +3y > 1), Region 2: (2x+3y<1). Given that the magnetic field around the boundary is H2=50(ax)-30(ay)-10(az).

A) Find H2n (Normal to the boundary) and H2t (Tangential to the boundary)

B) If there are no surface current at the boundary, find H1, B2, and m2

C) If there is a surface current of 4(ay) on the boundary find H1.

I don't know where to start, can you give detailed step by step explanation?