# Recent questions tagged matrix

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If $\vec{a}=(2,1,-1)$ and $\vec{b}=(-1,2,1)$, then $2 \vec{a}-3 \vec{b}$ is equal to
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If $\vec{a}=(2,1,-1)$ and $\vec{b}=(-1,2,1)$, then $2 \vec{a}-3 \vec{b}$ is equal toIf $\vec{a}=(2,1,-1)$ and $\vec{b}=(-1,2,1)$, then $2 \vec{a}-3 \vec{b}$ is equal to &nbsp; A) $(1,-4,-5)$ B) $(7,-4,5)$ C) $(7,-4,-5)$ D) $(7,4, ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 Find the inverse of the matrix $$A=\left(\begin{array}{rrr} 2 & 0 & 4 \\ 1 & 2 & 7 \\ 6 & 4 & 22 \end{array}\right)$$ 0 answers 4 views Find the inverse of the matrix $$A=\left(\begin{array}{rrr} 2 & 0 & 4 \\ 1 & 2 & 7 \\ 6 & 4 & 22 \end{array}\right)$$Find the inverse of the matrix $$A=\left(\begin{array}{rrr} 2 &amp; 0 &amp; 4 \\ 1 &amp; 2 &amp; 7 \\ 6 &amp; 4 &amp; 22 \end{array}\right)$$ ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 Calculate the determinant $$\left|\begin{array}{rrrr} -2 & 1 & -1 & 1 \\ 3 & 2 & 0 & -4 \\ -1 & 1 & 2 & -1 \\ 1 & -1 & 3 & -2 \end{array}\right|$$ 0 answers 5 views Calculate the determinant $$\left|\begin{array}{rrrr} -2 & 1 & -1 & 1 \\ 3 & 2 & 0 & -4 \\ -1 & 1 & 2 & -1 \\ 1 & -1 & 3 & -2 \end{array}\right|$$Calculate the determinant $$\left|\begin{array}{rrrr} -2 &amp; 1 &amp; -1 &amp; 1 \\ 3 &amp; 2 &amp; 0 &amp; -4 \\ -1 &amp; 1 &amp; 2 &amp; -1 \\ 1 & ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 Write the equation of the plane through the points (3,-2,5),(1,4,-1),(2,-6,7) 0 answers 3 views Write the equation of the plane through the points (3,-2,5),(1,4,-1),(2,-6,7) Write the equation of the plane through the points$$ (3,-2,5),(1,4,-1),(2,-6,7)$$... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 Odd One Out: Which of the following expressions does not represent the same sequence as the others? 0 answers 3 views Odd One Out: Which of the following expressions does not represent the same sequence as the others? Odd One Out: Which of the following expressions does not represent the same sequence as the others? A)$\left\{\frac{2(2 i-1)}{2^{2}}\right\}_{i= ...
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Solve the equation $8^{2 x-5}=2^{x+1}$
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Solve the equation $8^{2 x-5}=2^{x+1}$Solve the equation $8^{2 x-5}=2^{x+1}$ ...
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A large online store offers various brands of milk frothers for making...
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A large online store offers various brands of milk frothers for making... Im pretty clueless how to solve this. Can anyone help me? ...
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Which of the following statements about principal component analysis (PCA) based on a p×p correlation matrix are true?
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Which of the following statements about principal component analysis (PCA) based on a p×p correlation matrix are true?Which of the following statements about principal component analysis (PCA) based on a p×p correlation matrix are true? a. Due to the implicit scaling ...
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How is information organized in a matrix?
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How is information organized in a matrix?How is information organized in a matrix? ...
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How do you use row operations to determine the reduced row echelon form of a matrix?
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How do you use row operations to determine the reduced row echelon form of a matrix?How do you use row operations to determine the reduced row echelon form of a matrix? ...
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For each of the augmented matrices below, write the corresponding system of equations.
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For each of the augmented matrices below, write the corresponding system of equations.For each of the augmented matrices below, write the corresponding system of equations. a. \left\begin{array}{cc|c}2 &amp; -1 &amp; 5 \\ 3 &amp; 1 ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 Write an augmented matrix for each of the system of equations below. 1 answer 39 views Write an augmented matrix for each of the system of equations below.Write an augmented matrix for each of the system of equations below. a. \ \begin{gathered} 2 x+3 y=9 \\ x-y=-1 \end{gathered} \ b. \(\begin{aligned ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 How do you form an augmented matrix from a system of linear equations? 1 answer 38 views How do you form an augmented matrix from a system of linear equations?How do you form an augmented matrix from a system of linear equations? ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 Suppose you are given the matrix 1 answer 46 views Suppose you are given the matrixSuppose you are given the matrix \(B=\left\begin{array}{ccc}-1 &amp; 3 &amp; -2 \\ 2 &amp; 1 &amp; -3 \\ 0 &amp; 4 &amp; 5\end{array}\right a. F ...
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What is a matrix?
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What is a matrix?What is a matrix? ...
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How do I calculate the cross-product of a 2x2 matrix?
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How do I calculate the cross-product of a 2x2 matrix?How do I calculate the cross-product of a 2x2 matrix? ...
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State the difference between a row vector and a column vector.
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State the difference between a row vector and a column vector.State the difference between a row vector and a column vector. ...
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What is Electronegativity ?
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What is Electronegativity ?What is Electronegativity ? ...
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What is IUPAC naming?
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What is IUPAC naming?What is IUPAC naming? ...
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How can I prove that a matrix $S_{ij}$ is positive semi-definite?
1 answer 56 views
How can I prove that a matrix $S_{ij}$ is positive semi-definite?How can I prove that a matrix $S_{ij}$ is positive semi-definite? ...
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Construct the $3 \times 2$ matrix whose elements are given by $a_{i j}=\frac{i}{j}$
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Construct the $3 \times 2$ matrix whose elements are given by $a_{i j}=\frac{i}{j}$Construct the $3 \times 2$ matrix whose elements are given by $a_{i j}=\frac{i}{j}$ ...
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If a matrix 18 elements what is the possible order it can have?
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If a matrix 18 elements what is the possible order it can have?If a matrix 18 elements what is the possible order it can have? ...
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If a matrix 8 elements what is the possible order it can have ?
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If a matrix 8 elements what is the possible order it can have ?If a matrix 8 elements what is the possible order it can have ? ...
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Write the elements of $a_{13}, a_{21}, a_{33}, a_{24}, a_{23}$
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Write the elements of $a_{13}, a_{21}, a_{33}, a_{24}, a_{23}$ In a matrix \left\begin{array}{cccc} 2 &amp; 5 &amp; 19 &amp; -17 \\ 35 &amp; -2 &amp; \frac{5}{2} &amp; 12 \\ \sqrt{3} &am ...
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Define what a symmetric matrix is
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Define what a symmetric matrix isDefine what a symmetric matrix is ...
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