q求详解,急等ing,谢谢1函数f(x)=x(sinx+a)的绝对值+b是奇函数的充要条件是?2在三角形ABC中,AM=1/3AB,AN=1/3AC,BN和CM相交于点P,设AB=a,AC=b,试用a和b表示向量AP
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![q求详解,急等ing,谢谢1函数f(x)=x(sinx+a)的绝对值+b是奇函数的充要条件是?2在三角形ABC中,AM=1/3AB,AN=1/3AC,BN和CM相交于点P,设AB=a,AC=b,试用a和b表示向量AP](/uploads/image/z/8911143-63-3.jpg?t=q%E6%B1%82%E8%AF%A6%E8%A7%A3%2C%E6%80%A5%E7%AD%89ing%2C%E8%B0%A2%E8%B0%A21%E5%87%BD%E6%95%B0f%EF%BC%88x%EF%BC%89%3Dx%EF%BC%88sinx%2Ba%EF%BC%89%E7%9A%84%E7%BB%9D%E5%AF%B9%E5%80%BC%2Bb%E6%98%AF%E5%A5%87%E5%87%BD%E6%95%B0%E7%9A%84%E5%85%85%E8%A6%81%E6%9D%A1%E4%BB%B6%E6%98%AF%3F2%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2CAM%3D1%2F3AB%2CAN%3D1%2F3AC%2CBN%E5%92%8CCM%E7%9B%B8%E4%BA%A4%E4%BA%8E%E7%82%B9P%2C%E8%AE%BEAB%3Da%2CAC%3Db%2C%E8%AF%95%E7%94%A8a%E5%92%8Cb%E8%A1%A8%E7%A4%BA%E5%90%91%E9%87%8FAP)
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