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SOLVED:The focal width of a parabola is the length of the focal chord, that is, the line segment through the focus perpendicular to the axis, with endpoints on the parabola. See FIGURE 7.1.18. (a) Find the focal width of the parabola x^2=8 y. (b) Show that the focal width of the parabola x^2= 4 c y and y^2=4 c x is 4|c|
SOLVED:The focal width of a parabola is the length of the focal chord, that is, the line segment through the focus perpendicular to the axis, with endpoints on the parabola. See FIGURE 7.1.18. (a) Find the focal width of the parabola x^2=8 y. (b) Show that the focal width of the parabola x^2= 4 c y and y^2=4 c x is 4|c|
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