定积分入门题(在线等)求∫(0-1)f(x)dx f(x)=x平方我是这样做的分割成n个区间 第i个区间为(i-1/n,i/n)近似代替 s=lim(x→∞)∑1/n(f(ξ))=1/n平方(1平方+2平方+...+n平方)之后用一个公式可以变成 lim(x→
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![定积分入门题(在线等)求∫(0-1)f(x)dx f(x)=x平方我是这样做的分割成n个区间 第i个区间为(i-1/n,i/n)近似代替 s=lim(x→∞)∑1/n(f(ξ))=1/n平方(1平方+2平方+...+n平方)之后用一个公式可以变成 lim(x→](/uploads/image/z/2782389-21-9.jpg?t=%E5%AE%9A%E7%A7%AF%E5%88%86%E5%85%A5%E9%97%A8%E9%A2%98%28%E5%9C%A8%E7%BA%BF%E7%AD%89%29%E6%B1%82%E2%88%AB%280-1%29f%28x%29dx+f%28x%29%3Dx%E5%B9%B3%E6%96%B9%E6%88%91%E6%98%AF%E8%BF%99%E6%A0%B7%E5%81%9A%E7%9A%84%E5%88%86%E5%89%B2%E6%88%90n%E4%B8%AA%E5%8C%BA%E9%97%B4+%E7%AC%ACi%E4%B8%AA%E5%8C%BA%E9%97%B4%E4%B8%BA%28i-1%2Fn%2Ci%2Fn%29%E8%BF%91%E4%BC%BC%E4%BB%A3%E6%9B%BF+s%3Dlim%28x%E2%86%92%E2%88%9E%29%E2%88%911%2Fn%28f%28%CE%BE%29%29%3D1%2Fn%E5%B9%B3%E6%96%B9%EF%BC%881%E5%B9%B3%E6%96%B9%2B2%E5%B9%B3%E6%96%B9%2B...%2Bn%E5%B9%B3%E6%96%B9%EF%BC%89%E4%B9%8B%E5%90%8E%E7%94%A8%E4%B8%80%E4%B8%AA%E5%85%AC%E5%BC%8F%E5%8F%AF%E4%BB%A5%E5%8F%98%E6%88%90+lim%28x%E2%86%92)
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