What is the principal unit normal vector to the curve at the specified value of the parameter?
#r(t)=sqrt(2)thati+e^thatj+e^-thatk; t=0#
1 Answer
Jan 2, 2018
Explanation:
The normal vector at any point on the curve is the gradient of the curve evaluated at the specified parametric value.
Compute the gradient:
A normal vector,
We make it the unit vector by dividing by its magnitude: