请问:1、∣∫f(x)dx∣≤∫∣f(x) ∣dx ,我怎么觉得左右两边总是相等,请说明一下什么情况下左边小于右边?左边不能大于右边吗?2、微积分学第一基本定理的公式:如果函数f(x)在区间[a,b]上连
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![请问:1、∣∫f(x)dx∣≤∫∣f(x) ∣dx ,我怎么觉得左右两边总是相等,请说明一下什么情况下左边小于右边?左边不能大于右边吗?2、微积分学第一基本定理的公式:如果函数f(x)在区间[a,b]上连](/uploads/image/z/7205592-48-2.jpg?t=%E8%AF%B7%E9%97%AE%EF%BC%9A1%E3%80%81%E2%88%A3%E2%88%ABf%28x%29dx%E2%88%A3%E2%89%A4%E2%88%AB%E2%88%A3f%28x%29+%E2%88%A3dx+%2C%E6%88%91%E6%80%8E%E4%B9%88%E8%A7%89%E5%BE%97%E5%B7%A6%E5%8F%B3%E4%B8%A4%E8%BE%B9%E6%80%BB%E6%98%AF%E7%9B%B8%E7%AD%89%2C%E8%AF%B7%E8%AF%B4%E6%98%8E%E4%B8%80%E4%B8%8B%E4%BB%80%E4%B9%88%E6%83%85%E5%86%B5%E4%B8%8B%E5%B7%A6%E8%BE%B9%E5%B0%8F%E4%BA%8E%E5%8F%B3%E8%BE%B9%3F%E5%B7%A6%E8%BE%B9%E4%B8%8D%E8%83%BD%E5%A4%A7%E4%BA%8E%E5%8F%B3%E8%BE%B9%E5%90%97%3F2%E3%80%81%E5%BE%AE%E7%A7%AF%E5%88%86%E5%AD%A6%E7%AC%AC%E4%B8%80%E5%9F%BA%E6%9C%AC%E5%AE%9A%E7%90%86%E7%9A%84%E5%85%AC%E5%BC%8F%EF%BC%9A%E5%A6%82%E6%9E%9C%E5%87%BD%E6%95%B0f%28x%29%E5%9C%A8%E5%8C%BA%E9%97%B4%5Ba%2Cb%5D%E4%B8%8A%E8%BF%9E)
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