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主要内容

可去不连续点

问题

x, does not equal, 4时,有 g, left parenthesis, x, right parenthesis, equals, start fraction, x, squared, minus, x, minus, 12, divided by, x, minus, 4, end fraction
g 在一切实数上连续。
找到 g, left parenthesis, 4, right parenthesis
选出正确答案:
不会做了?
不会做了?