Western Normal University Edition First Grade Mathematics Volume 1
Beijing Normal University Edition Seventh Grade Mathematics Volume 1
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People's Education Press Second Grade Mathematics Volume 1
People's Education Press Third Grade Mathematics Volume 1
Beijing Normal University Edition Seventh Grade Mathematics Volume 2
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Hebei Education Edition Third Grade Mathematics Volume 1
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Beijing Normal University Edition Eighth Grade Mathematics Volume 1
People's Education High School Mathematics Edition B Compulsory Course 2
Hebei Education Edition Seventh Grade Mathematics Volume 2
Hebei Education Edition Fourth Grade Mathematics Volume 2
Beijing Normal University Edition Fifth Grade Mathematics Volume 2
People's Education Press First Grade Mathematics Volume 2
Qingdao Edition Seventh Grade Mathematics Volume 2
Category | Format | Size |
---|---|---|
Beijing Normal University Edition Eighth Grade Mathematics Volume 1 | pptx | 6 MB |
Description
"Determining linear function expressions using linear equations of two variables" PPT download of linear equations of two variables, 32 pages in total.
Part One: Learning Objectives
Use the method of undetermined coefficients to find linear function expressions
Use linear equations of two variables to find linear function expressions for practical problems
Use linear equations of two variables to determine linear function expressions PPT, Part 2: Gain new knowledge
Knowledge points: Use linear equations of two variables to find linear function expressions
Because the general form of a linear function is y=kx+b (k, b are constants, k≠0), the key to finding the expression of a linear function is to determine the values of k and b (i.e., the undetermined coefficients).
Summarize
Like this, the method of finding the expression of a function by first setting the function expression (determining the function model) and then determining the unknown coefficients in the expression based on conditions is called the undetermined coefficient method.
Knowledge points: Use linear equations of two variables to find linear function expressions of practical problems
Places A and B are 100 km apart. Two people, A and B, are riding toward each other from places A and B respectively at the same time. Assuming that they both keep driving at a constant speed, the distance s (km) between them and place A is 100 km. A linear function of the driving time t(h). After 1 hour, person B is 80 km away from place A; after 2 hours, person A is 30 km away from place A. How long will it take for the two people to meet?
How did you do it? Communicate with peers.
Use linear equations of two variables to determine linear function expressions PPT, Part 3: Class summary
1. Undetermined coefficient method:
The method of first setting up a function expression, and then determining the unknown coefficients in the expression according to the given conditions, to obtain the function expression is called the undetermined coefficient method.
2. General steps for finding expressions using the method of undetermined coefficients:
(1) Set up a function expression containing undetermined coefficients;
(2) Substitute the corresponding values of the independent variables and functions in the known conditions into the function expression to obtain an equation (set) about the undetermined coefficients;
(3) Solve the equation (set) and find the undetermined coefficients;
(4) Substitute the obtained value of the undetermined coefficient back into the set expression.
Keywords: Free download of the Beijing Normal University version of eighth-grade math PPT courseware for the first volume, using a system of linear equations of two variables to determine a linear function expression PPT download, download of a system of linear equations of two variables PPT, .PPT format;
For more information about the PPT courseware "Determining the expression of a linear function using a system of linear equations in two variables using a system of linear equations in two variables", please click on the PPT tag "Determining the expression of a linear function using a system of linear equations in two variables" PPT tag.
"Determining linear function expressions using linear equations of two variables" PPT teaching courseware for linear equations of two variables:
"Using a system of linear equations of two variables to determine the expression of a linear function" PPT teaching courseware for a system of linear equations of two variables Part 1: Knowledge points Basic knowledge point 1 The relationship between a system of linear equations of two variables and a linear function 1. Known straight line y=3x- The coordinates of the intersection of 3 and y=-3/2x+b..
"Using a system of linear equations of two variables to determine the expression of a linear function" System of linear equations of two variables PPT:
"Using a system of linear equations of two variables to determine the expression of a linear function" System of linear equations of two variables PPT, 22 pages in total. Part One: Learning Objectives 1. Be able to use a system of linear equations of two variables to determine the expression of a linear function. (Key point) ... ... ... using a system of linear equations of two variables..
"Using linear equations of two variables to determine linear function expressions" PPT courseware for linear equations of two variables:
"Using a system of linear equations of two variables to determine the expression of a linear function" PPT courseware teaching objectives of the system of linear equations of two variables 1. Understand the respective characteristics of the method of constructing the image of a function and the algebraic method. 2. Master the method of determining a linear function using a system of linear equations of two variables. Expression. 3. Further understanding..
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Update Time: 2024-10-19
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