1:1  10-26[文·数学]李老师教大家将数的精确和形的直观合理结合
推荐理由：利用函数图象能解决很多问题，但有时候必须要有代数支持才能使问题解决得更准确，随意画图，出了错都很难发现。所以数的精确和形的直观，必须合理结合，搭配才能完美。 讲解人：http://www.jiandan100.cn/teacher/304f1e13a6194c10b1481930926586f9/ ，数学高级教师，北京市中青年骨干教师。 题面：在区间  范围内函数y=tan x与函数y=sin x的图象交点的个数是_________.
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浏览本期“简单学习电子周报”完整目录：http://www.jiandan100.cn/bbs/upload/viewthread.php?tid=652998 |
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