ray r(t) = (0; 0; 0) + t(1; 0; 0), t ≥ 0 Given the ray defined above, determine whether or not this ray uniquely intersects with a disk for radius r, center O and oriented along the normal vector N. In other words, write down the conditions under which the ray uniquely intersects with the disk in terms of r, O, N. Note: you may assume that the center O = (Ox, Oy, Oz) and normal N = (Nx, Ny, Nz).    Please Help

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