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掌握这10种情况轻松找出函数定义域,考试不再愁!
让我们掌握这10种常见情况,以确保在考试中游刃有余。 首先,我们需要记住一些基本的规则。当涉及到有理函数时,分母不能为零。举个例子,对于函数f(x) = 1/(x-2),我们可以明确x不能等于2,因此定义域是R - {2}。通过这种方法,我们可以排除所有导致分母为 ...
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