1. The problem statement, all variables and given/known data Hello, looking for some help regarding the shortest distance from a point to z=xy. Perhaps some advice? If R=(X, Y, Z) is the point on the surface closest to P=(0, 0, 1), then L[\b] is a vector normal to the surface and L[\b]=Xi+Yj+(z-1)k n[\b]=yi+xj-k is the normal vector, and there exists some scalar quantity such that L[\b]=tn[\b] thus, ty=X, tx=Y, z-1=-t From here. no matter what it seems like i cant do anything... thanks in advance!!!!