Maths: Algebra Matrices Class 12th

posted by .

matrix{{0, 1, -1}, {2, 1, 3}, {1, 1, 1}} matrix{{1, -1, x}} matrix{{0}, {1}, {1}}=0

Find the value of x

Don't give me the direct answer. Please tell me how to go about this. Draw in your notebook and then solve

  • Maths: Algebra Matrices Class 12th -

    Your matrix notation does not distinguish rows from columns, which is critical in matrices.
    The best possible interpretation I get is:

    a11 a12 a13
    a21 a22 a23
    a31 a32 a33
    multiplied by
    b1
    b2
    b3
    to give
    c1 c2 c3
    which is then multiplied by another
    d1
    d2
    d3
    to give
    e=0

    So multiply rows of a to the column b to give c, for example:
    c1=a11*b1+a12*b2+a13*b3
    and similarly for the other rows.
    Same for e:
    e=c1*d1+c2*d2+c3*d3

    Through the multiplication, you will preserve the value of x, and equate the value of e to zero to solve for x.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra II

    I skipped algebra I so I never learned about matrices. If you had a 2X3 matrix & multiplied it by a 3X2 matrix, what size would the product matrix be?
  2. Algebra II (Matrices)

    My book doesn't solve it like a linear equation, they solve it by using inverse matrices. Solve the matrix equation: |4 -5||m|=|32| |1 2| |n|=|-5| A= |4 -5| |1 2| X= |m| |n| B= |32| |-5| Step 1. Find the inverse of the coefficient …
  3. matrices

    Two matrices can be multiplied only if their sizes are compatible. Suppose that U is an m × n matrix, and that V is a p × q matrix. In order for U•V to make sense, what must be true of the dimensions of these matrices?
  4. math

    Two matrices can be multiplied only if their sizes are compatible. Suppose that U is an m × n matrix, and that V is a p × q matrix. In order for U•V to make sense, what must be true of the dimensions of these matrices?
  5. MATHS----Matrix

    For a given square matrix A the predicted values of matrix B are: predicted B=A(A'A)^(-1)A'B why is the matrix C=A(A'A)^(-1)A' an idempotent and symmetric matrix?
  6. Math

    I have a few questions about T-Matrix. In excel, I am suppose to work with powered matrices to construct a weighted T matrix, using a scalar of .7. Does this mean I multiply each of the powered matrices by .7?
  7. Algebra-Matrix

    How would I do these Matrices? 1. |1/2 14 10 -8| 2, Let matrix A = [8 -2 4 7 ] Let matrix B = 2A, Find b_22
  8. algebra

    Hi guys: Can any one please tell me what does this means?
  9. Calc

    A video games shop is analyzing its sales performance using matrices. Matrix A contains the unit sales data for each product category (horizontally) per week (vertically). Matrix B contains the unit sales data for weekends for each …
  10. Math

    Hi! I need help with these two questions. Thanks! :) 1.) Can we multiply the Matrix A (which is 3 x 4 matrix) by the other matrix, Matrix B (which is 3 x 4 matrix)?

More Similar Questions