| Category | Format | Size |
|---|---|---|
| Beijing Normal University eighth grade first volume mathematics | pptx | 6 MB |
"System of linear equations in three variables" System of linear equations in two variables PPT courseware 2
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"System of linear equations in three variables" System of linear equations in two variables PPT courseware 2
Neither of these two systems of equations is a system of linear equations of two variables. So what is the difference between them and a system of linear equations of two variables? What characteristics do they have in common?
Features: ① Contains three unknowns in total; ② The degree of terms containing unknowns is all 1. ③ Contains three equations in total.
How to solve a system of linear equations in three variables?
The basic idea of solving a system of linear equations in two variables is to try to eliminate an unknown number and convert "two variables" into "one variable".
What is the basic idea of solving a system of linear equations in three variables?
Is it also possible to first eliminate an unknown number and convert "three yuan" into "two yuan", and then convert "two yuan" into "one yuan"? Give it a try!
Tell me about your gains
(1) The basic methods for solving linear equations of three variables are substitution method and addition and subtraction. Addition and subtraction are more commonly used.
(2) The basic idea of solving a system of three-dimensional linear equations is elimination, and the key is also elimination. We must select the correct elimination object and decide on the elimination plan according to the characteristics of the system of equations.
(3) After solving, it must be substituted into the three equations of the original system of equations for verification.
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For more information about the PPT courseware "System of linear equations in two variables and system of linear equations in three variables", please click on the "System of linear equations in two variables ppt System of linear equations in three variables ppt" tag.
"Simple Three-dimensional Linear Equations" PPT courseware:
"Simple System of Linear Equations in Three Variables" PPT Courseware Part One: Review and New Knowledge Knowledge Review What are the methods for solving systems of linear equations in two variables? What is their essence? New Lesson Introduction Question Xiao Ming has 12 denominations of 1 yuan, 2 yuan, and 5 yuan on hand..
"Simple Three-dimensional Linear Equations" PPT:
"Simple Tridimensional Linear Equations" PPT Part 1 content: Content introduction (1) The definition of a tridimensional linear equation contains three unknowns, and the degree of the terms containing the unknowns is 1. An integral equation like this is called a tridimensional linear equation . (2) Three yuan per...
"System of linear equations in three variables" PPT courseware 2:
"System of linear equations in three variables" PPT courseware 2 Definition Contains three unknowns, and the degree of the terms containing the unknowns is 1. An integral equation like this is called a linear equation in three variables. Solution: Suppose Rascal Rabbit is x years old, Garfield is y years old, and Mickey Mouse is z years old, x+y+z=26, ① x-..
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Update Time: 2024-06-15
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