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han shu ling dian ( fang cheng gen ) wen ti chuan chuan shao
Pages: 35-37
Year: Issue:  9
Journal: Guangdong Education

Abstract: 函数与方程,是新课标新增内容,也是历年高考的高频考点,在高考中通常以选择题、填空题的形式考查.而函数零点(方程根)问题,已成为新课标高考的必考题型,从2012年的高考真题中可见一斑. [例题](2012年高考湖北文)函数f(x)=xcos2x在区间[0,2π]上的零点个数为() A.2 B.3 C.4 D.5 [答案]D.
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