14 Answered Questions for the topic Determinant

Determinant Linear Algebra Matrix

03/22/20

Find the determinants for the matrices:

1. [ 5 4 ] [ 1 6 ] 2. [ 1 5 -3 ] [ -1 -3 3 ] [ 0 4 4 ] 3. 3I (I is a 4x4 matrix) 4. [ -1 -3 0 -3 ] [ 0 0 -1 0 ] [ 1 -1 3 -2 ] [ 3 2 -3 4 ]
Determinant Linear Algebra Matrix

03/22/20

Compute the determinant of the matrix that's obtained from A by applying the indicated row operation:

Suppose A ∈ M3 is a matrix with det(A) = -2The following row operations:a) R1 - 7R2b) 3R2c) R3 ⇄ R1
Determinant Trigonometry Matrix

09/01/19

Prove matrix det(cos x cos z 1, cos y 1 cos z, 1 cos y cos x) = 0 if x+y+z= 2 pi

Prove matrix det(cos x cos z 1, cos y 1 cos z, 1 cos y cos x) = 0 if x+y+z= 2 pi

03/30/19

Use of determinants?

I have been teaching myself maths (primarily calculus) throughout this and last year, and was stumped with the use of determinants. In the math textbooks I have, they simply show how to compute a... more
Determinant Linear Algebra Matrix

11/06/17

Finding det of a matrix after row operations.

Given a 4x4 matrix where R1: a b c d, R2: e f g h, R3: i j k l, R4: m n o p. We know that the determinant of this matrix is 9. What would the new determinant be if the matrix was transformed into... more

01/17/17

Determine whether or not the determinant is 0.

Given a 3 × 3 matrix B with real entries, suppose that the system of linear equations determined by  B(x1 x2 x3) = (0 1 1) (they should be column matrices.) has infinitely many solutions. Determine... more
Determinant Matrices

07/14/16

Prove that

prove that b2+c2   ab        ac ab        c2+a2   bc              = 4a2b2c2 ca        cb         a2+b2   3X3 Matrix

07/02/16

Determinant of Matrix

Expand by minors on the row or column that appears to make the computation easiest.   [-3, 0, 0; 7, 11, 0; 1, 2, 2] (so semicolon means end of row)
Determinant Matrices

03/14/16

prove DC^-1 BA^-1=(AB^-1 CD^-1)^-1. First state what you need to show; and then show it properly.

Matrices Determinants
Determinant Linear Algebra

03/10/16

Finding the determinant ( Linear Algebra)

Using elementary row or column operations to find the determinant.  |3   8  7| |0  -5  4| |6   1  6|

03/24/15

Find the determinant

| 1 -1 3| |-1 2 -2| | 2 -2 4|
Determinant

03/23/15

Find the determinant

|1 -1 3| |0 -2 1| |4  0 1|
Determinant

12/27/14

Find the determinant

1+x   1       1     1 1      1-x     1     1 1       1    1+z    1 1       1      1      1-z
Determinant

05/31/14

help with determinants

Did I do this correctly?   use determinants to dtermine the number of solutions for each of the following and DO NOT solve the systems.     a.      3x -  y =  7         6x - 2y = ... more

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