y=x^a^2-4a-9是偶函数,且在(0,+∞)是减函数,则整数a的值__________ 幂函数(m,n,k∈m,n互质)图像在一、二象限,不过原点,则k,m,n的奇偶性为________
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![y=x^a^2-4a-9是偶函数,且在(0,+∞)是减函数,则整数a的值__________ 幂函数(m,n,k∈m,n互质)图像在一、二象限,不过原点,则k,m,n的奇偶性为________](/uploads/image/z/5925717-45-7.jpg?t=y%3Dx%5Ea%5E2-4a-9%E6%98%AF%E5%81%B6%E5%87%BD%E6%95%B0%2C%E4%B8%94%E5%9C%A8%EF%BC%880%2C%2B%E2%88%9E%EF%BC%89%E6%98%AF%E5%87%8F%E5%87%BD%E6%95%B0%2C%E5%88%99%E6%95%B4%E6%95%B0a%E7%9A%84%E5%80%BC__________+%E5%B9%82%E5%87%BD%E6%95%B0%EF%BC%88m%2Cn%2Ck%E2%88%88m%2Cn%E4%BA%92%E8%B4%A8%EF%BC%89%E5%9B%BE%E5%83%8F%E5%9C%A8%E4%B8%80%E3%80%81%E4%BA%8C%E8%B1%A1%E9%99%90%2C%E4%B8%8D%E8%BF%87%E5%8E%9F%E7%82%B9%2C%E5%88%99k%2Cm%2Cn%E7%9A%84%E5%A5%87%E5%81%B6%E6%80%A7%E4%B8%BA________)
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