"Using Three Ways to Express Quadratic Functions" Quadratic Function PPT Courseware 2 Simple campus recruitment activity planning plan summary enterprise and institution recruitment publicity lecture PPT template is a general PPT template for business post competition provided by the manuscript PPT, simple campus recruitment activity planning plan summary enterprise and institution recruitment promotion Lecture PPT template, you can edit and modify the text and pictures in the source file by downloading the source file. If you want more exquisite business PPT templates, you can come to grid resource. Doug resource PPT, massive PPT template slide material download, we only make high-quality PPT templates!
| 文件名 如何下载使用 | 下载次数 | Download Points | 下载地址 |
|---|---|---|---|
| "Using Three Ways to Exp... | 19550次 | 0.00 | Free Download |
Tips: If you open the template and feel that it is not suitable for all your needs, you can search for related content "Using Three Ways to Express Quadratic Functions" Quadratic Function PPT Courseware 2 is enough.
How to use the Windows system template
Directly decompress the file and use it with office or wps
How to use the Mac system template
Directly decompress the file and use it Office or wps can be used
Related reading
For more detailed PPT-related tutorials and font tutorials, you can view: Click to see
How to create a high-quality technological sense PPT? 4 ways to share the bottom of the box
Notice
Do not download in WeChat, Zhihu, QQ, built-in browsers, please use mobile browsers to download! If you are a mobile phone user, please download it on your computer!
1. The manuscript PPT is only for study and reference, please delete it 24 hours after downloading.
2. If the resource involves your legitimate rights and interests, delete it immediately.
3. Contact information: service@daogebangong.com
"Using Three Ways to Express Quadratic Functions" Quadratic Function PPT Courseware 2, due to usage restrictions, it is only for personal study and reference use. For commercial use, please go to the relevant official website for authorization.
(Personal non-commercial use refers to the use of this font to complete the display of personal works, including but not limited to the design of personal papers, resumes, etc.)
Related reading
For more detailed PPT-related tutorials and font tutorials, you can view:Please click to see
Authoritative PPT Summary
"Using Three Ways to Express Quadratic Functions" Quadratic Function PPT Courseware 2
Review and consolidate, raise questions
1. Definition of quadratic function:
y=ax²+bx+c（a≠0）
General formula: y=ax²+bx+c (a≠0)
Vertex formula: y=a(x-m)²+n（a≠0）
Two radical formula: y=a(x-x1)(x-x2) (a≠0)
Analyze the problem and summarize
Do it
Textbook Page 61: The perimeter of the rectangle is known to be 20cm, and its side length is xcm and its area is ycm²
What is the law of how y changes as x changes?
Can you express it using function expressions, tables and images respectively?
Analysis: One side of the rectangle is xcm, and the other side can be expressed as (10-x)cm. According to the area formula of the rectangle, the area y of the rectangle can be expressed.
In the above question, what is the range of values of the independent variable x?
Because x represents the side length of a rectangle with a perimeter of 20cm, x>0,10-x>0. Therefore, the value range of the independent variable x is 0
Please describe how y changes as x changes.
y=-x+10x=-(x-5)²+25
When 0
When 5
Based on the analysis process of the problem, what are the three ways of expressing quadratic functions?
Analytic method—expressing functions using expressions
List method—representing functions in tables
Graphical method—representing functions graphically
Based on the above three expressions, answer the following questions:
1. What is the value range of the independent variable x?
∵x represents any number
∴The value range of the independent variable x is: all real numbers
2. What are the symmetry axis and vertex coordinates of the image?
From the vertex expression and image of the expression, it can be seen that the symmetry axis of the image is: straight line x=1; the vertex coordinate is: (1,-1).
y=(x-1)²-1
3. How to describe the change of y as x changes?
It can be seen from the tables and images that the change of y with the change of x is:
When x<1, y decreases as x increases;
When x>1, y increases as x increases.
Practice in class to consolidate knowledge
1. Make an image of the function y=x²+6x+1 and fill in the blanks based on the image:
When x=-3, the function takes the minimum value -8;
When x≥-3, y increases with the increase of x. (increase, decrease)
2. The vertex coordinates of the function y=-x²+2x+5 are (1,6), and the opening of the image is downward.
When x=1, the function has a maximum (large, small) value of 6.
Keywords: quadratic function teaching courseware, using three ways to express quadratic function teaching courseware, Beijing Normal University edition ninth grade mathematics volume 2 PPT courseware, ninth grade mathematics slide courseware download, quadratic function PPT courseware download, using three Mode represents quadratic function PPT courseware download, .ppt format
For more information about the PPT courseware "Quadratic Functions Use Three Ways to Represent Quadratic Functions", please click the Quadratic Function ppt uses three ways to express quadratic functions ppt tag.
"Using Three Ways to Express Quadratic Functions" Quadratic Function PPT Courseware 4:
"Using Three Ways to Express Quadratic Functions" Quadratic Function PPT Courseware 4 Learning Objectives 1. Experience the process of expressing the quadratic function relationship between variables in three ways, and understand the connections and differences between the three ways. 2. Be able to Analyze and represent quadratic functional relationships between variables,...
"Using Three Ways to Express Quadratic Functions" Quadratic Function PPT Courseware 3:
"Using Three Ways to Express Quadratic Functions" Quadratic Function PPT Courseware 3 Do it. It is known that the perimeter of the rectangle is 20cm and its side length is xcm and its area is ycm. What is the law of y changing as x changes? Can you express it using function expressions, tables and images? ..
"Using Three Ways to Express Quadratic Functions" Quadratic Function PPT Courseware:
"Using Three Ways to Express Quadratic Functions" Quadratic Function PPT Courseware Do It It is known that the perimeter of a rectangle is 20cm and its side length is xcm and its area is ycm. What is the law of y changing with x? Can you express it using function expressions, tables and images? above..