12.设f(x)是定义域在R上奇函数,且当x≤0时,f(x)=-x^2-2x(1)求当x>0时,f(x)的解析式;(2)在右边的坐标系中画出x∈R的函数图象(3)写出函数的单调区间;(4)写出函数的零点.
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![12.设f(x)是定义域在R上奇函数,且当x≤0时,f(x)=-x^2-2x(1)求当x>0时,f(x)的解析式;(2)在右边的坐标系中画出x∈R的函数图象(3)写出函数的单调区间;(4)写出函数的零点.](/uploads/image/z/2652995-11-5.jpg?t=12.%E8%AE%BEf%28x%29%E6%98%AF%E5%AE%9A%E4%B9%89%E5%9F%9F%E5%9C%A8R%E4%B8%8A%E5%A5%87%E5%87%BD%E6%95%B0%2C%E4%B8%94%E5%BD%93x%E2%89%A40%E6%97%B6%2Cf%28x%29%3D-x%5E2-2x%EF%BC%881%EF%BC%89%E6%B1%82%E5%BD%93x%3E0%E6%97%B6%2Cf%28x%29%E7%9A%84%E8%A7%A3%E6%9E%90%E5%BC%8F%EF%BC%9B%EF%BC%882%EF%BC%89%E5%9C%A8%E5%8F%B3%E8%BE%B9%E7%9A%84%E5%9D%90%E6%A0%87%E7%B3%BB%E4%B8%AD%E7%94%BB%E5%87%BAx%E2%88%88R%E7%9A%84%E5%87%BD%E6%95%B0%E5%9B%BE%E8%B1%A1%EF%BC%883%EF%BC%89%E5%86%99%E5%87%BA%E5%87%BD%E6%95%B0%E7%9A%84%E5%8D%95%E8%B0%83%E5%8C%BA%E9%97%B4%EF%BC%9B%EF%BC%884%EF%BC%89%E5%86%99%E5%87%BA%E5%87%BD%E6%95%B0%E7%9A%84%E9%9B%B6%E7%82%B9.)
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