论文部分内容阅读
文[1]改变了苏教版高中数学必修4第49页的“探究·拓展”题17可能被闲置的尴尬局面.这种“用活教材、用足教材”的做法很是值得学习和称道.对于“等宽直角走廊”问题,文[1]利用三角函数建立数学模型,然后通过换元将目标函数转化为函数在某一区间
The article [1] changed the embarrassing situation that the “inquiry and expansion” question 17 of the Jiangsu Pedagogic High School Mathematics Compulsory 4 on page 49 might be left unused. This kind of “use of living teaching materials and sufficient teaching materials” is very much a practice. It is worth learning and lauding. For the “equal width corridor” problem, the paper [1] uses trigonometric functions to establish a mathematical model, and then converts the objective function into a function in a certain interval by means of a substitution.