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数学公式识别问题 #285
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后面看看 如何优化下 |
为了计算极限 (\lim_{x \to -\infty} \frac{\sqrt{4x^2 - 4x + 5} - 2x}{x}),我们首先观察根号内的表达式 (\sqrt{4x^2 - 4x + 5})。 当 (x) 趋向负无穷时,(4x^2) 是主导项。我们可以通过因式分解 (4x^2) 来简化根号内的表达式: [ 因为 (x) 是负数,所以 (|x| = -x),进而有: [ 我们接下来使用 (1 - \frac{1}{x} + \frac{5}{4x^2}) 的泰勒展开近似: [ 所以, [ 代入原极限公式中, [ [ 因为 (\frac{1}{x}) 和 (\frac{5}{4x^2}) 在 (x) 趋向负无穷时都趋向于 0,所以极限值为: [ 这种情况也有整个回答都没有公式预览 |
他用的好像是LaTeX格式 |
集中这里 解决了 #345 |
请更新到 |
数学部分问题一些公式预览不出来
大佬能优化一下吗
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