[高三数学]函数f(x)=1/2lnx+x^2-6x+8在区间(2,3)内的零点个数是答案是1个,求详解,谢谢!还有一道题:在△ABC的边AB、AC上分别取点M、N,使向量AM=1/3向量AB,向量AN=1/2向量AC,BN与CM交于点P,若向量BP=m点乘
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![[高三数学]函数f(x)=1/2lnx+x^2-6x+8在区间(2,3)内的零点个数是答案是1个,求详解,谢谢!还有一道题:在△ABC的边AB、AC上分别取点M、N,使向量AM=1/3向量AB,向量AN=1/2向量AC,BN与CM交于点P,若向量BP=m点乘](/uploads/image/z/8575806-30-6.jpg?t=%5B%E9%AB%98%E4%B8%89%E6%95%B0%E5%AD%A6%5D%E5%87%BD%E6%95%B0f%28x%29%3D1%2F2lnx%2Bx%5E2-6x%2B8%E5%9C%A8%E5%8C%BA%E9%97%B4%282%2C3%29%E5%86%85%E7%9A%84%E9%9B%B6%E7%82%B9%E4%B8%AA%E6%95%B0%E6%98%AF%E7%AD%94%E6%A1%88%E6%98%AF1%E4%B8%AA%2C%E6%B1%82%E8%AF%A6%E8%A7%A3%2C%E8%B0%A2%E8%B0%A2%21%E8%BF%98%E6%9C%89%E4%B8%80%E9%81%93%E9%A2%98%EF%BC%9A%E5%9C%A8%E2%96%B3ABC%E7%9A%84%E8%BE%B9AB%E3%80%81AC%E4%B8%8A%E5%88%86%E5%88%AB%E5%8F%96%E7%82%B9M%E3%80%81N%2C%E4%BD%BF%E5%90%91%E9%87%8FAM%3D1%2F3%E5%90%91%E9%87%8FAB%2C%E5%90%91%E9%87%8FAN%3D1%2F2%E5%90%91%E9%87%8FAC%2CBN%E4%B8%8ECM%E4%BA%A4%E4%BA%8E%E7%82%B9P%2C%E8%8B%A5%E5%90%91%E9%87%8FBP%3Dm%E7%82%B9%E4%B9%98)
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