Recent content by phizz

okay I am actually not getting 0 when i take the dot product...i don't know if you actually did it out but if you did is this correct? or is my math wrong?

because that is the vector equation of a plane and you are showing that the normal vector N is perpendicular to r(t) which is in this plane?

My example is: x = 1+3t+2t^2 y = 2-2t+5t^2 z = 1-t^2

I'm not sure exactly how you would show that every other point in the curve lies on this plane. I was thinking: Find three points on the curve, setting t=-1,0,1. Then using those points to come up with 2 vectors v1 and v2 and taking v1 X v2. This gives us a normal vector, telling us that we...