I don't know how to solve the mathematical limit of freshman. I don't know what the teacher said in class. Hurry up! Thank you. By the way, what is the left and right limit?

F(x) has a limit and g(x) does not exist. The left limit approaches infinitely from the left. This question is close to zero. The left limit of f(x) is equal to the right limit, equal to 1, while the left limit of g(x) is equal to-1 and the right limit is equal to 1. Left limit is not equal to right limit, only when left limit is equal to right limit.

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