共有两题~时间紧迫~一、已知函数f(x)=x²/2+ax+ln(x-1)(常数a∈R)①讨论函数f(x)在定义域上的单调性②当函数f(x)有极值时,求证:函数f(x)所有极值之和小于-8二、已知函数f(x)=4x/(3x²+3),x
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![共有两题~时间紧迫~一、已知函数f(x)=x²/2+ax+ln(x-1)(常数a∈R)①讨论函数f(x)在定义域上的单调性②当函数f(x)有极值时,求证:函数f(x)所有极值之和小于-8二、已知函数f(x)=4x/(3x²+3),x](/uploads/image/z/11728904-32-4.jpg?t=%E5%85%B1%E6%9C%89%E4%B8%A4%E9%A2%98%7E%E6%97%B6%E9%97%B4%E7%B4%A7%E8%BF%AB%7E%E4%B8%80%E3%80%81%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3Dx%26sup2%3B%2F2%2Bax%2Bln%28x-1%29%EF%BC%88%E5%B8%B8%E6%95%B0a%E2%88%88R%EF%BC%89%E2%91%A0%E8%AE%A8%E8%AE%BA%E5%87%BD%E6%95%B0f%28x%29%E5%9C%A8%E5%AE%9A%E4%B9%89%E5%9F%9F%E4%B8%8A%E7%9A%84%E5%8D%95%E8%B0%83%E6%80%A7%E2%91%A1%E5%BD%93%E5%87%BD%E6%95%B0f%28x%29%E6%9C%89%E6%9E%81%E5%80%BC%E6%97%B6%2C%E6%B1%82%E8%AF%81%EF%BC%9A%E5%87%BD%E6%95%B0f%28x%29%E6%89%80%E6%9C%89%E6%9E%81%E5%80%BC%E4%B9%8B%E5%92%8C%E5%B0%8F%E4%BA%8E-8%E4%BA%8C%E3%80%81%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3D4x%2F%283x%26sup2%3B%2B3%EF%BC%89%2Cx)
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