Determinant of 3x3 Matrices, 2x2 Matrix, Precalculus Video Tutorial
This precalculus video tutorial explains how to find the determinant of 3x3 matrices and 2x2 matrices.
Introduction to Matrices: • Intro to Matrices
Adding and Subtracting Matrices:
• Adding and Subtracting...
Scalar Multiplication of Matrices:
• Scalar Multiplication ...
Solving Matrix Equations:
• Solving Matrix Equations
Multiplying Matrices:
• Multiplying Matrices
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Gaussian Elimination & Row Echelon Form:
• Gaussian Elimination &...
Gauss Jordan Elimination:
• Gauss Jordan Eliminati...
Gaussian Elimination With 4 Variables:
• Gaussian Elimination W...
Inverse of a 2x2 Matrix:
• Inverse of a 2x2 Matrix
Inverse of a 3x3 Matrix:
• Inverse of a 3x3 Matrix
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Determinant of 2x2 and 3x3 Matrix:
• Determinant of 3x3 Mat...
Determinant of 4x4 Matrix:
• How To Find The Determ...
Cramer's Rule - 2x2 Linear System:
• Cramer's Rule - 2x2 Li...
Cramer's Rule - 3x3 Linear System:
• Cramer's Rule - 3x3 Li...
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Final Exams and Video Playlists: www.video-tutor.net/ Full-Length Videos & Worksheets: www.patreon.com/MathScienceTutor/collections Next Video: kzread.info/dash/bejne/l42etdeYqLu7hbQ.html
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1:54 bookmark - the first thing you want to do is get "rid" of the first row and column and notice what you have "leftover" ( In this case its b2 ,c2 b3 , c3 . ) so a1 is a 2x2 matrix which is b2 , c2 ,b3 , c3 . 2:05 using b1 and crossing everything is around it ( since b1 is in the first row and second column we cross out the first row and second column , and are left with a2 , c2 , c2 , c3 2:37 3:23 - after you use the formula to have everything "setup" use the method of a 2x2 matrix (where. * ad-bc ) 3:35 first example 6:15 adding all the numbers to get the determinant of out 3x3 matrix in this first example . 6:49 - second example
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4 жыл бұрын
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Why aren't the coefficients squared in the first step line? I thought it's k^n[A,nxn], and since n = 2, it would be 2^2, 4^2 and (-3)^2 in front of the 2x2 matrices?
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Hello please is it possible to calculate the determinant of a 3x4 matrice
Why did you make the second expression negative and the third positive
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