若过定点M(-1,0)且斜率为k的直线与圆x²+y²+4x-5=0在第一象限内有交点,则k的取值范围是()若曲线C:x²+y²+2ax-4ay+5a²-4=0上所有的点均在第二象限,则a的取值范围为()像这种
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![若过定点M(-1,0)且斜率为k的直线与圆x²+y²+4x-5=0在第一象限内有交点,则k的取值范围是()若曲线C:x²+y²+2ax-4ay+5a²-4=0上所有的点均在第二象限,则a的取值范围为()像这种](/uploads/image/z/7953946-34-6.jpg?t=%E8%8B%A5%E8%BF%87%E5%AE%9A%E7%82%B9M%EF%BC%88-1%2C0%EF%BC%89%E4%B8%94%E6%96%9C%E7%8E%87%E4%B8%BAk%E7%9A%84%E7%9B%B4%E7%BA%BF%E4%B8%8E%E5%9C%86x%26%23178%3B%2By%26%23178%3B%2B4x-5%3D0%E5%9C%A8%E7%AC%AC%E4%B8%80%E8%B1%A1%E9%99%90%E5%86%85%E6%9C%89%E4%BA%A4%E7%82%B9%2C%E5%88%99k%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E6%98%AF%EF%BC%88%EF%BC%89%E8%8B%A5%E6%9B%B2%E7%BA%BFC%EF%BC%9Ax%26%23178%3B%2By%26%23178%3B%2B2ax-4ay%2B5a%26%23178%3B-4%3D0%E4%B8%8A%E6%89%80%E6%9C%89%E7%9A%84%E7%82%B9%E5%9D%87%E5%9C%A8%E7%AC%AC%E4%BA%8C%E8%B1%A1%E9%99%90%2C%E5%88%99a%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E4%B8%BA%EF%BC%88%EF%BC%89%E5%83%8F%E8%BF%99%E7%A7%8D)
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