Relative Aperture. The relative aperture, or f-stop, of a 23.5-mm diameter lens is directly proportional to the focal length F of the lens. If a 150-mm focal length has an f-stop of 6.3, find the f-stop of a 23.5-mm diameter lens with a focal length of 80 mm.

L9 - 8 Def. Aufn f is continuous from the right at x = c if f is continuous from the left at c if In our example, is f continuous from the right or left at x =0 At x =1 Continuity on Intervals Afntiicniusnanneal I if it is continuous at...