求值域要具体步骤:y=cos ①x∈[π/6,π/3]②x∈[-π/6,2π/3]③x∈[-2π/3,4π/3]
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![求值域要具体步骤:y=cos ①x∈[π/6,π/3]②x∈[-π/6,2π/3]③x∈[-2π/3,4π/3]](/uploads/image/z/14699837-29-7.jpg?t=%E6%B1%82%E5%80%BC%E5%9F%9F%E8%A6%81%E5%85%B7%E4%BD%93%E6%AD%A5%E9%AA%A4%EF%BC%9Ay%3Dcos+%E2%91%A0x%E2%88%88%5B%CF%80%2F6%2C%CF%80%2F3%5D%E2%91%A1x%E2%88%88%5B-%CF%80%2F6%2C2%CF%80%2F3%5D%E2%91%A2x%E2%88%88%5B-2%CF%80%2F3%2C4%CF%80%2F3%5D)
求值域要具体步骤:y=cos ①x∈[π/6,π/3]②x∈[-π/6,2π/3]③x∈[-2π/3,4π/3]
求值域要具体步骤:y=cos ①x∈[π/6,π/3]②x∈[-π/6,2π/3]③x∈[-2π/3,4π/3]
求值域要具体步骤:y=cos ①x∈[π/6,π/3]②x∈[-π/6,2π/3]③x∈[-2π/3,4π/3]
求值域要具体步骤:y=cosx ①x∈[π/6,π/3]②x∈[-π/6,2π/3]③x∈[-2π/3,4π/3]
①x∈[π/6,π/3]
定义域在第一象限,0
求值域要具体步骤:y=cos ①x∈[π/6,π/3]②x∈[-π/6,2π/3]③x∈[-2π/3,4π/3]
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