教法是提高教学效率的根本,是一个教师教学水平的体现,科学的教法不仅让学生学得快,而且学得有意思,对学生的解题能力有明显的提高。下面是根据自己的教学经验总结出来的一些新的教法。求y=Asin(wx+ψ)(A>0,w>0)的单调区间教法一是利用复合函数的单调性来求。具体方法是:令u=wx+ψ则y=A sinu。原函数看成是由这两个简单函数复合而成,由于在w>0时,函数u=wx+ψ是增函数,而y=Asinu(A>0)有增有 Teaching method is to improve the efficiency of teaching is the fundamental embodiment of a teacher’s teaching level, scientific teaching not only allows students to learn faster, and learn interesting, students’ ability to solve problems have been significantly improved. The following is based on their own teaching experience summed up some new teachings. Find monotonous range method y = Asin (wx + ψ) (A> 0, w> 0) is to use the monotonicity of the composite function to find. The specific method is: Let u = wx + ψ then y = A sinu. The original function is considered to be a combination of these two simple functions. Since w = 0, the function u = wx + ψ is an increasing function and y = Asinu (A> 0)