Web上海普通高中学业水平等级性考试成绩在计入高考总分时,由五等细化为a+、a、b+、b、b-、c+、c、c-、d+、d、e共11级,分别占5%、10%、10%、10%、10%、10%、10% … Weba+b≥2√ab,当且仅当a=b时取等号(最小值) 解答: 由(a-b)²≥0 a²-2ab+b²≥0 a²+2ab+b²≥4ab (a+b)²≥4ab, ∴a+b≥2√ab成立。 只有当a=b时, 不等式左边:a+b=2a, 不等式右边:2√ab=2a, 即等号成立,取到最小值。
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WebCurrent Weather. 5:10 AM. 63° F. RealFeel® 62°. Air Quality Fair. Wind SW 5 mph. Wind Gusts 9 mph. Clear More Details. WebMar 15, 2016 · This is especially important if you place the probe on the patient’s cornea or conjunctiva. Step 4. Apply a coupling agent to the probe tip. Often, artificial tear gel or 2.5% methylcellulose are used; however, be sure to avoid using abdominal ultrasound gel, as it is considered an ocular irritant. Step 5. lámparas de mesa tiffany baratas
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