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2003年高考新课程卷(文史类)第21题,打破了通过抽象函数考查奇偶性、单调性、及周期性的传统,直接利用三角函数来考查上述三个性质,试题不落俗套.是一道有新意的好题.
The 21st title of the 2003 college entrance examination new curriculum volume (literature and history) breaks the tradition of examining parity, monotonicity, and periodicity through abstract functions. It directly uses trigonometric functions to examine the above three properties. The questions are unconventional. Have a good idea of new ideas.