It’s the derivative of the unit tangent vector at t with respects to t. The unit tangent vector has length 1 and points in the direction the curve is traveling. Since it’s length is fixed at 1, this means the derivative describes how much the direction of the curve is changing with respects to t.
What the hell is T’(t)
It’s the derivative of the unit tangent vector at t with respects to t. The unit tangent vector has length 1 and points in the direction the curve is traveling. Since it’s length is fixed at 1, this means the derivative describes how much the direction of the curve is changing with respects to t.