如果函数y=|x|-1 的图像与方程x^2+ky^2=1的曲线恰好有两个不同的公共点,则实数k的取值范围是 ( )A.(-∞,-1] ∪[0,1] B.[-1,1) C.[-1,0] D.[-1,0] ∪(1,+∞)
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![如果函数y=|x|-1 的图像与方程x^2+ky^2=1的曲线恰好有两个不同的公共点,则实数k的取值范围是 ( )A.(-∞,-1] ∪[0,1] B.[-1,1) C.[-1,0] D.[-1,0] ∪(1,+∞)](/uploads/image/z/2792848-40-8.jpg?t=%E5%A6%82%E6%9E%9C%E5%87%BD%E6%95%B0y%3D%7Cx%7C-1+%E7%9A%84%E5%9B%BE%E5%83%8F%E4%B8%8E%E6%96%B9%E7%A8%8Bx%5E2%2Bky%5E2%3D1%E7%9A%84%E6%9B%B2%E7%BA%BF%E6%81%B0%E5%A5%BD%E6%9C%89%E4%B8%A4%E4%B8%AA%E4%B8%8D%E5%90%8C%E7%9A%84%E5%85%AC%E5%85%B1%E7%82%B9%2C%E5%88%99%E5%AE%9E%E6%95%B0k%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E6%98%AF+%28+%29A.%28-%E2%88%9E%2C-1%5D+%E2%88%AA%5B0%2C1%5D+B.%5B-1%2C1%29+C.%5B-1%2C0%5D+D.%5B-1%2C0%5D+%E2%88%AA%281%2C%2B%E2%88%9E%29)
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