New post in Linear-algebra

Why the ratios of the coefficient of x and y of two parallel lines are equal but it is not equal to the ratio of their constant terms?

August 21st, 2022

True or False elementary matrices

August 6th, 2022

Is there a non-linear combination of basis vectors?

January 13th, 2023

dimension of operations of subspaces

January 3rd, 2023

How to prove that the solutions of a linear system Ax=0 is a vector space over R?

December 24th, 2022

Matrix multiplication: AB=BA for every B implies A is of the form cI

December 22nd, 2022

Finding rank of matrix A^2 =A

December 21st, 2022

Proof that if $ax = 0_v$ either a = 0 or x = 0

December 11th, 2022

If $x+y+z=5$ and $xy+yz+zx=3$,then least and largest value of $x$ are?

December 5th, 2022

Product of two symmetric matrices is similar to a symmetric matrix

December 4th, 2022

How to pare down a set to form a basis?

July 23rd, 2022

How to prove that a homogeneous system of linear equations with more unknowns than equations has infinitely many solutions?

November 27th, 2022

Find the shortest distance from the point P = (2,2,5)

August 15th, 2022

Let A and B be n by n matrices . Prove that if A is symmetric and B be skew-symmetric , then {A,B} is a linearly independent set.

November 20th, 2022

Finding the image of an arbitrary vector.

August 15th, 2022

Calculate eigenvalues and eigenvector for given 4x4 matrix?

July 23rd, 2022

# of invertible $n \times n$ matrices with entries in field $k$ with $q$ elements?

August 14th, 2022

Determinants with arithmetic progressions as columns

October 18th, 2022

Conditions of $AB=0$ where $A$ and $B$ are matrices of compatible dimensions

August 14th, 2022

How to find the general solution to this matrix?

September 30th, 2022

Determine whether the system $A\mathbb x=\mathbb b$ is consistent by examing how $\mathbb b$ relates to the column vectors of $A$.

July 22nd, 2022

What is the proof that det(A) = det(A transpose)?

September 29th, 2022

Non standard vector addition

September 29th, 2022

Need help with linear transformations (with projection and reflection)?

July 22nd, 2022

how to find the geometric multiplicity - Linear algebra

August 8th, 2022

How to show that if $A, B$, and $A + B$ are invertible matrices with the same size, then $A(A^{ −1} + B^{ −1} )B(A + B)^ {−1} = I$

August 27th, 2022

Determinant of Gram matrix - without knowing it's a Gram matrix or using anything "fancy"

July 29th, 2022

What's the proof that sum of all projection operators for orthonormal basis gives us identity operator?

September 16th, 2020

What are the Eigenstates and Eigenvalues?

June 11th, 2020

When writing this Lorentz transform as a matrix why do we take the transpose?

March 4th, 2020