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4. (Flux Normal to a Surface) Consider a point P=(x,y,z)=(2a/3,b/3,2c/3), which is on the surface of an ellipsoid defined by (ax)2+(by)2+(cz)2=1 Suppose that there is a flux f which has the components f=(fx,fy,fz)=(32a,3b,32c). Notice that f is parallel to a line connecting the origin with point P. Compute fn=nf at point P, where n is the unit normal vector pointing outward to the surface of the ellipsoid