For a camera with a lens of fixed focal length F focus on an object located at a distance x from the lens, the film must be placed at a distance y behind the lens, where F, x, and y are related by 1/x + 1/y = 1/F Suppose the camera has a 55-mm lens (F= 55). A. Express as a function of and graph the function. B. What happens to the focusing distance as the object moves far away from the lens? C. What happens to the focusing distance as the object moves closer to the lens?
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i dont know po sorry,yan din po yung tanong ko sana.