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Recent questions tagged matrix

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DRDO CSE 2022 Paper 1 | Question: 1
Compute $\left[M M^{T}\right]^{-1}$ for an orthogonal matrix where \[M=\left[\begin{array}{lll} \frac{1}{\sqrt{2}} & \frac{2}{\sqrt{2}} & \frac{-2}{\sqrt{2}} \\ \frac{-2}{\sqrt{2}} & \frac{2}{\sqrt{2}} & \frac{1}{\sqrt{2}} \\ \frac{2}{\sqrt{2}} & \frac{1}{\sqrt{2}} & \frac{2}{\sqrt{2}} \end{array}\right] .\]

admin asked in Linear Algebra Dec 15, 2022

by admin

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2

MADEEASY TESTSERIES
To justify the OPTION B they gave an example of 2*2 matrix. However we can see that row 2 is linearly dependent on row1. Even though the 2nd row looks non-zero it can be made into zero. SO am I wrong or the explanation is wrong?

DAWID15 asked in Linear Algebra Dec 9, 2022

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3

Matrix
While studying Linear algebra I got 2 perspectives. Which meaning out of these 2 is more accurate?

Mohib asked in Linear Algebra Oct 17, 2022

by Mohib

148 views

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2 answers

4

Engineering mathematics
If A is a non-zero column matrix of order n×1 and B is a non-zero row matrix of order 1×n then rank of AB equals ? Rank(ab) can be zero???

Overflow04 asked in Linear Algebra Sep 21, 2022

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2 votes

2 answers

5

Made Easy: Linear Algebra (MSQ)
Let $A$ be a $3$ x $3$ matrix with rank $2$. Then, $AX=0$ has The trivial solution $X=0$. One independent solution. Two independent solution. Three independent solution.

DebRC asked in Linear Algebra Sep 19, 2022

by DebRC

422 views

1 vote

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6

Self doubt.
If A, B & C are matrices & AB=AC then B=C? as we know it is not always true because when A is singular matrix then B=C not possible so what is the right ans to say B=C is (always not equal) or (may or may not be equal) or (simply not equal)?

Nisha Bharti asked in Linear Algebra Sep 19, 2022

by Nisha Bharti

198 views

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2 answers

7

data structure using c, by yaswant kanethkar
Explain the method to calculate the address of an element in an array. A 25*4 matrix array DATA is stored in memory in ‘row-major order’. If base address is 200 and 4 words per memory cell. Calculate the address of DATA [12, 3]…??

akama asked in DS Sep 11, 2022

by akama

407 views

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Eigen Value Of A Matrix
For given Matrix: [ 1 2 3 1 5 1 3 1 1 ] Why does the sum of the eigen values of above matrix is the sum of diagonal elements of that matrix?

ryandany07 asked in Linear Algebra Sep 4, 2022

161 views

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Recent questions tagged matrix