Analysis on Easily Wrong Topic of Calculating Double Limit in the Online and Offline Blended Teaching
Most of the students often make mistakes when calculating double limit,and the common types of errors in the process of calculation are as follows:when using the special path method or the repeated limit to find the double limit,ignoring the changing trend of variables,and when using the pinch criterion,the wrong inequality is used.In view of each of mistakes,the corresponding example is given,the wrong solution is analyzed and the correct solution is given.
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