两题数学题,二十分钟内答出追100分1:已知a为实数,f(x)=3x^-2ax-4,f(-1)=0,求f(x)在[-2,2]上的最大值和最小值.2:已知直线l1:x-2y-5=0与圆C:x^2+y^2=50.求交点A,B的坐标;三角形AOB的面积.真的急.
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![两题数学题,二十分钟内答出追100分1:已知a为实数,f(x)=3x^-2ax-4,f(-1)=0,求f(x)在[-2,2]上的最大值和最小值.2:已知直线l1:x-2y-5=0与圆C:x^2+y^2=50.求交点A,B的坐标;三角形AOB的面积.真的急.](/uploads/image/z/3966582-30-2.jpg?t=%E4%B8%A4%E9%A2%98%E6%95%B0%E5%AD%A6%E9%A2%98%2C%E4%BA%8C%E5%8D%81%E5%88%86%E9%92%9F%E5%86%85%E7%AD%94%E5%87%BA%E8%BF%BD100%E5%88%861%3A%E5%B7%B2%E7%9F%A5a%E4%B8%BA%E5%AE%9E%E6%95%B0%2Cf%28x%29%3D3x%5E-2ax-4%2Cf%28-1%29%3D0%2C%E6%B1%82f%28x%29%E5%9C%A8%5B-2%2C2%5D%E4%B8%8A%E7%9A%84%E6%9C%80%E5%A4%A7%E5%80%BC%E5%92%8C%E6%9C%80%E5%B0%8F%E5%80%BC.2%3A%E5%B7%B2%E7%9F%A5%E7%9B%B4%E7%BA%BFl1%3Ax-2y-5%3D0%E4%B8%8E%E5%9C%86C%3Ax%5E2%2By%5E2%3D50.%E6%B1%82%E4%BA%A4%E7%82%B9A%2CB%E7%9A%84%E5%9D%90%E6%A0%87%EF%BC%9B%E4%B8%89%E8%A7%92%E5%BD%A2AOB%E7%9A%84%E9%9D%A2%E7%A7%AF.%E7%9C%9F%E7%9A%84%E6%80%A5.)
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