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Author Question: Specify the interval where y = ln x is a solution of the differential equation xy"+ y' = 0. (Read 52 times) |
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Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.
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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.