推荐回答(4个)
初中的数学压轴题一般都是二次函数的图像和几何的结合,因为是压轴题所以很多内容都汇聚于此 所以说 首先 先把二次函数基础学好 会做简单的变性题 然后对几何尤其是相似的熟练掌握 其次是根据题型合理推测从而证明要记住每一个知识点都应该掌握 即使不能达到举一反三 也得会举一反一 例如 对于线段长的最小值 使其成为一条直线 然后计算 随语特殊的三角形要分析多种情况 特殊性状的判断如果能与三角函数挂钩 就应该利用起来 动点面积的计算要详细的清楚计算的公式能从题目上与其联系 从而列出面积的函数 最大值最小值的可能是二次函数 如果是一次函数的话就涉及到取值范围 相似的时候要注意对应线段和已知线段 列出正确的比例式 还有其他的诀窍自己做题总结吧
初中的数学压轴题一般都是二次函数的图像和几何的结合,因为是压轴题所以很多内容都汇聚于此
所以说
首先
先把二次函数基础学好
会做简单的变性题
然后对几何尤其是相似的熟练掌握
其次是根据题型合理推测从而证明要记住每一个知识点都应该掌握
即使不能达到举一反三
也得会举一反一
例如
对于线段长的最小值
使其成为一条直线
然后计算
随语特殊的三角形要分析多种情况
特殊性状的判断如果能与三角函数挂钩
就应该利用起来
动点面积的计算要详细的清楚计算的公式能从题目上与其联系
从而列出面积的函数
最大值最小值的可能是二次函数
如果是一次函数的话就涉及到取值范围
相似的时候要注意对应线段和已知线段
列出正确的比例式
还有其他的诀窍自己做题总结吧
掌握基础很重要,所谓难的题目,也是一点一点的基础,变形而演变来的。所以基础是很关键的。平时就要多做练习。
试题不会太难,往往会有一个很小的突破口,只要抓住了这个突破口,任何难题都会迎刃而解!
每次做题,尤其是后面的大题,有时经常找不到头绪,但静下来想想,一会就发现了一个小突破口,然后继续摸索,答出来了。
先把二次函数基础学好 ,会做简单的变形题。
对几何尤其是相似的熟练掌握, 其次是根据题型合理推测从而证明要记住每一个知识点都应该掌握。
即使不能达到举一反三 ,也得会举一反一。
初中的数学压轴题一般都是二次函数的图像和几何的结合,压轴题所以很多内容都汇聚于此。
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