已知函数f(x)=根号三/2sin2x-cosx方-1/2 x属于R 高中数学三角函数已知函数f(x)=根号三/2sin2x-cos方x-1/2(x∈R)(1)当x∈[-π/12,5π/12]时,求函数f(x)的最小值和最大值(2)设三角形ABC的内角A,B,C的对应
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![已知函数f(x)=根号三/2sin2x-cosx方-1/2 x属于R 高中数学三角函数已知函数f(x)=根号三/2sin2x-cos方x-1/2(x∈R)(1)当x∈[-π/12,5π/12]时,求函数f(x)的最小值和最大值(2)设三角形ABC的内角A,B,C的对应](/uploads/image/z/5221058-50-8.jpg?t=%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3D%E6%A0%B9%E5%8F%B7%E4%B8%89%2F2sin2x-cosx%E6%96%B9-1%2F2+x%E5%B1%9E%E4%BA%8ER+%E9%AB%98%E4%B8%AD%E6%95%B0%E5%AD%A6%E4%B8%89%E8%A7%92%E5%87%BD%E6%95%B0%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3D%E6%A0%B9%E5%8F%B7%E4%B8%89%2F2sin2x-cos%E6%96%B9x-1%2F2%EF%BC%88x%E2%88%88R%EF%BC%89%EF%BC%881%EF%BC%89%E5%BD%93x%E2%88%88%5B-%CF%80%2F12%2C5%CF%80%2F12%5D%E6%97%B6%2C%E6%B1%82%E5%87%BD%E6%95%B0f%28x%29%E7%9A%84%E6%9C%80%E5%B0%8F%E5%80%BC%E5%92%8C%E6%9C%80%E5%A4%A7%E5%80%BC%EF%BC%882%EF%BC%89%E8%AE%BE%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E7%9A%84%E5%86%85%E8%A7%92A%2CB%2CC%E7%9A%84%E5%AF%B9%E5%BA%94)
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