Teacher Wu Zhongxiang also has some other classic quotations, such as: "This will slow you down" and "All right, students, come on!" Wait a minute.
Some "classic mistakes, standard zero" are:
1. Classic error solution:
Error reason: Cardinality cannot be replaced equivalently.
Thinking of solving problems: For the limit formula of non-constant exponent, we should consider rewriting the formula into the form of E exponent.
Correct answer:
2. Another example is the derivative value problem.
The classic mistake is that according to the derivative value of a point, the derivative of an interval is greater than 0.
The correct answer is: the positive and negative values are derived from a certain point, and the monotonicity of a certain interval cannot be deduced. The derivative value of a point is greater than 0, which only shows that the function value of the right end is always greater than that of the left end in the neighborhood of this point.