把函数知识全部学会,要多久,先从什么开始学起

2024-10-31 02:29:32
推荐回答(4个)
回答1:

首先,学习一次函数,对函数有一个基本的概念,一定要纯熟掌握所有关于一次函数的知识点,这是所有函数的基础,k和b的含义都要弄懂,图像随手能画,数形转换灵活为宜.
然后,就是反比例函数了,它是双曲线,看上去很复杂,其实挺简单,主要是因为对双曲线没有更深入的要求.做一些题,会了就行.
现在重点开始了,二次函数,这可是函数中的重中之重啊,初中高中都要学,而且学得很深入,其实并不简单,首先是掌握二次方程的解法和韦达定理,然后学二次函数,主要是从图像和函数系数的联系出发,每一个系数都有其特殊的含义哦,要好好细细的学,接着是有关二次函数各式各样的题目,有的很复杂的,还要结合不等式加以解决.
学到这里,想必对函数也只是有了一个初始的概念,并不是很理解,没关系,后面的学习会让你感觉在函数的世界里涵泳优游,接着你要利用高中的必修一课本,学习所有初等函数,包括指数函数,对数函数,幂函数,当然如果你学竞赛的话,还会接触到待绝对值的函数,原来在初中的课本里,函数都是"规规矩矩"的,也就是基本都是标准形式,到了高中就不一样了,都是混合式,有带绝对值的,有不带的,有带一个的,有带好几个的,还有二次函数和反比例混在一起的,总之,只有想不到,没有浑不出来的,但通过系统的学习,都能得解,这是你会觉得自己好伟大.然后到了高中的必修四或必修五,差不多要接触周期函数了,主要是三角函数, 这里图像必须熟练掌握,各种变形也很中要,主要是正弦型函数,别小看这个型字,它可比正弦函数复杂了.
好了,这些看得见摸得着的函数说完了,你该学习一些抽象函数了,既y=f(x),它也不说解析式是什么,就是让你知道一些性质,比如单调性,奇偶型,周期性,对称性,什么的,要么给你一个带着f(x)的很抽象的式子,就让你求解问题,这叫做抽象函数,学习了它你对函数的理解就非常深刻了.
当然,你还要认识到,函数和方程的联系,函数和数列的紧密联系,函数和集合之间的映射的关系,再到后面就是函数和导数以及微积分了.还有一类叫作二次曲线的,它们不属于函数,但也很有用,特别是对坐标系的应用,和解析式的求解.
整个一套学下了,不说多,如果你从未学过的话,差不多,一年能全通,说明你已经很用功了.
希望对你有帮助.

回答2:

从概念开始!你按照这个讨论学即可:先弄懂函数的定义(定义域、值域、和解析式)或概念,接着掌握它的几个基本性质(单调性、奇偶性、最值、周期性),理解并掌握函数的变换规律(平移规律:左加右减、上加下减)、再通过练习进行巩固即可。简单的说就是:概念——性质——运用——总结!

回答3:

函数贯穿整个高中学习,基本上每学期都会接触不一样的函数,所以函数学习需要一步一步来,从基本做起,做好每一题,到了总复习时自会得心应手

回答4:

看你的接受能力啊 概念很重要 不过不要死记 通过做适量题效果好些

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