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- Mathematics in the second semester of the second day of junior high school
Mathematics in the second semester of the second day of junior high school
Solution: Starting from the meaning of the question, let the relation be F=k/V and substitute it into (50,80).
K=50×80=4000, so the relationship is f = 4000/v;
When V= 100, the visual field width F=4000/ 100=40.
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