对于教材中的非通性解法或高考题中“歪打正着”的解法,教师应让学生认识到不可随意类比.例如,人教《必修4》第44页的例5:求函数y=sin(12x+π3),x∈〔-2π,2π〕的单调递增区间.若把该题改为求函数y=sin(12x+π3),x∈(-2π,2π)的单调递减区间.两者仅一字之 For the non-general solution to the textbook or the solution to the question “What should I do?” Teachers should make students aware of the non-random analogy. For example, people teach “Compulsory 4” Example 5 on page 44: Find the function y = sin (12x + π3), x∈ [-2π, 2π], monotonously decreasing interval of x∈ (-2π, 2π) if the problem is changed to find the function y = sin Only one word