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Find the matrices $AB$ and $BA$
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Find the matrices $AB$ and $BA$\begin{equation} \begin{aligned} &\text { Find } A B \text { and } B A .\\ &\text { Where } A=\left\begin{array}{ccc} 1 & -1 & 1 \\ - ...
by MathsGee Platinum
(102,810 points)
asked in Mathematics Jul 24, 2021
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If $A$ is a matrix of order $p \times q$ and $B$ is a matrix of order $q \times r$, then what is the order of the product of matrix $A B$ ?
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What are comparable matrices?
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What are comparable matrices?What are comparable matrices? ...
by MathsGee Platinum
(102,810 points)
asked in Mathematics Jul 24, 2021
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Are all matrices linear operators?
1 answer 25 views
Are all matrices linear operators?Are all matrices linear operators? ...
by MathsGee Platinum
(102,810 points)
asked in Mathematics Jul 24, 2021
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Show that $\langle v|A| w\rangle=\sum_{i j} A_{i j} v_{i}^{*} w_{j}$
0 answers 49 views
Show that $\langle v|A| w\rangle=\sum_{i j} A_{i j} v_{i}^{*} w_{j}$Show that $\langle v|A| w\rangle=\sum_{i j} A_{i j} v_{i}^{} w_{j}$ ...
by MathsGee Platinum
(102,810 points)
asked in Mathematics Jul 24, 2021
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What are the eigenvalues of $A \otimes B$, where $A, B$ are symmetric matrices and $\otimes$ denotes the tensor product?
0 answers 35 views
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Let $P(n)$ and $S(n)$ denote the product and the sum, respectively, of the digits of the integer $n$.
1 answer 110 views
Let $P(n)$ and $S(n)$ denote the product and the sum, respectively, of the digits of the integer $n$.Let $P(n)$ and $S(n)$ denote the product and the sum, respectively, of the digits of the integer $n$. For example, $P(23)=6$ and $S(23)=5$. Suppose $N ...
by MathsGee Platinum
(102,810 points)
asked in Mathematics Jul 16, 2021
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How many natural numbers from 1 to 2016 can be written as the product of an even number and a multiple of five?
0 answers 51 views
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Solve the following equation for $r:-2 r-2.25=3.75-8 r$
1 answer 41 views
Solve the following equation for $r:-2 r-2.25=3.75-8 r$Solve the following equation for $r:-2 r-2.25=3.75-8 r$ ...
by Maths Genie Bronze Status
(5,290 points)
asked in Mathematics Jun 17, 2021
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What is the determinant of the product of matrices
1 answer 66 views
What is the determinant of the product of matricesWhat is the determinant of the product of matrices $A=\left\begin{array}{ccc}2 & 3 & -1 \\ 0 & 1 & 2\end{array}\right$ and $B=\left ...
by MathsGee Platinum
(102,810 points)
asked in Mathematics Jun 16, 2021
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Solve the following rational equation. $$ \frac{2}{x+3}-\frac{1}{2 x+1}=\frac{8}{2 x^{2}+7 x+3} $$
1 answer 93 views
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Find and simplify the product of the following rational expression. $$ \frac{(x+2)}{x(x-3)} \cdot \frac{3(x-3)}{4} $$
1 answer 146 views
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Find the following product. $$ (1-3 x)\left(x^{2}+2 x-5\right) $$
1 answer 56 views
Find the following product. $$ (1-3 x)\left(x^{2}+2 x-5\right) $$Find the following product. $$ (1-3 x)\left(x^{2}+2 x-5\right) $$ ...
by MathsGee Platinum
(102,810 points)
asked in Mathematics May 30, 2021
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Which 3 numbers have the same answer whether they are added or multiplied together?
0 answers 147 views
Which 3 numbers have the same answer whether they are added or multiplied together?Which 3 numbers have the same answer whether they are added or multiplied together? ...
by Pieter SIlver Status
(17,435 points)
asked in Mathematics May 24, 2021
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What is a Cartesian product of two sets $A$ and $B$?
1 answer 105 views
What is a Cartesian product of two sets $A$ and $B$?What is a Cartesian product of two sets $A$ and $B$? ...
by MathsGee Platinum
(102,810 points)
asked in Mathematics May 22, 2021
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The points A, B and $\mathrm{C}$ have position vectors
0 answers 59 views
The points A, B and $\mathrm{C}$ have position vectorsThe points A, B and $\mathrm{C}$ have position vectors $\boldsymbol{a}=i-3 j, \quad \boldsymbol{b}=2 i-j+k$ and $\boldsymbol{c}=10 j+10 k$ respectivel ...
by MathsGee Platinum
(102,810 points)
asked in Mathematics May 19, 2021
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What are the quotient and product rules in differentiation?
1 answer 61 views
What are the quotient and product rules in differentiation?What are the quotient and product rules in differentiation? ...
by MathsGee Platinum
(102,810 points)
asked in Mathematics May 10, 2021
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Does the Pythagorean theorem generalize to arbitrary inner product spaces?
1 answer 44 views
Does the Pythagorean theorem generalize to arbitrary inner product spaces?Does the Pythagorean theorem generalize to arbitrary inner product spaces? ...
by Pieter SIlver Status
(17,435 points)
asked in Mathematics May 8, 2021
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An inner product on a real vector space $V$ is a function $\langle\cdot, \cdot\rangle: V \times V \rightarrow \mathbb{R}$ satisfying
1 answer 143 views
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What are vector spaces?
1 answer 38 views
What are vector spaces?What are vector spaces? ...
by MathsGee Platinum
(102,810 points)
asked in Mathematics May 8, 2021
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How can 3D printing improve a company's innovation, product development, and speed to market?
0 answers 62 views
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How does a startup know if they have product-market fit?
0 answers 58 views
How does a startup know if they have product-market fit?How does a startup know if they have product-market fit? ...
by MathsGee Platinum
(102,810 points)
asked in Business Apr 22, 2021
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