1道高三生数学题(数学废柴的某人伏地)——————9x(次方)—10×3x(次方)+9≤0,求y=¼的(x—1)次方—4×½的x次方+2的值域.算了老半天了,虽然知道是用换元法.但是羞愧的在下做
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![1道高三生数学题(数学废柴的某人伏地)——————9x(次方)—10×3x(次方)+9≤0,求y=¼的(x—1)次方—4×½的x次方+2的值域.算了老半天了,虽然知道是用换元法.但是羞愧的在下做](/uploads/image/z/14629408-16-8.jpg?t=1%E9%81%93%E9%AB%98%E4%B8%89%E7%94%9F%E6%95%B0%E5%AD%A6%E9%A2%98%EF%BC%88%E6%95%B0%E5%AD%A6%E5%BA%9F%E6%9F%B4%E7%9A%84%E6%9F%90%E4%BA%BA%E4%BC%8F%E5%9C%B0%EF%BC%89%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%949x%28%E6%AC%A1%E6%96%B9%EF%BC%89%E2%80%9410%C3%973x%28%E6%AC%A1%E6%96%B9%29%2B9%E2%89%A40%2C%E6%B1%82y%3D%26frac14%3B%E7%9A%84%EF%BC%88x%E2%80%941%EF%BC%89%E6%AC%A1%E6%96%B9%E2%80%944%C3%97%26frac12%3B%E7%9A%84x%E6%AC%A1%E6%96%B9%2B2%E7%9A%84%E5%80%BC%E5%9F%9F.%E7%AE%97%E4%BA%86%E8%80%81%E5%8D%8A%E5%A4%A9%E4%BA%86%2C%E8%99%BD%E7%84%B6%E7%9F%A5%E9%81%93%E6%98%AF%E7%94%A8%E6%8D%A2%E5%85%83%E6%B3%95.%E4%BD%86%E6%98%AF%E7%BE%9E%E6%84%A7%E7%9A%84%E5%9C%A8%E4%B8%8B%E5%81%9A)
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