Thread: Length of subtangent, subnormal, tangent, and normal

Reviewing for my board exam ... Got no idea in solving this problem.

Find the length of subtangent, subnormal, tangent and normal of at point (2,1)

a. 1, 1 / 3, sqrt of 10 / 2, sqrt of 10
b. 1, 3, 5, 7
c. 1, 3, sqrt of 10 / 3, sqrt of 10
d. -1 / 3, -3, sqrt of 10 / 3, sqrt of 10

First step:

Find the tangent and normal lines to the curve at . You should respectively obtain:



Regards.

Fernando Revilla