while my answer is a valid normal vector, it does not have a positive z-component so it is not actually correct, my question is how do i go about making it have a positive z-component.
Homework Statement
Find the unit vector with positive z component which is normal to the surface z=xy+xy^2 at the point (1,1,2) on the surface.Homework Equations
Well no real relevant equations i guess... but the thing is i know how to get the normal vector, i know how to convert it to a...