1).证明1-2sinxcosx/cos²x-sin²x=1-tanx/1+tanx2).已知函数f(x)=tan(-1/2x+π/6)1.求函数的定义域.值域2.讨论函数的周期性.奇偶性和单调区间
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![1).证明1-2sinxcosx/cos²x-sin²x=1-tanx/1+tanx2).已知函数f(x)=tan(-1/2x+π/6)1.求函数的定义域.值域2.讨论函数的周期性.奇偶性和单调区间](/uploads/image/z/1332907-43-7.jpg?t=1%29.%E8%AF%81%E6%98%8E1-2sinxcosx%2Fcos%26%23178%3Bx-sin%26%23178%3Bx%3D1-tanx%2F1%2Btanx2%29.%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3Dtan%28-1%2F2x%2B%CF%80%2F6%291.%E6%B1%82%E5%87%BD%E6%95%B0%E7%9A%84%E5%AE%9A%E4%B9%89%E5%9F%9F.%E5%80%BC%E5%9F%9F2.%E8%AE%A8%E8%AE%BA%E5%87%BD%E6%95%B0%E7%9A%84%E5%91%A8%E6%9C%9F%E6%80%A7.%E5%A5%87%E5%81%B6%E6%80%A7%E5%92%8C%E5%8D%95%E8%B0%83%E5%8C%BA%E9%97%B4)
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