
Please post any and all homework or other textbookstyle problems in one of the Homework & Coursework Questions...

Feb2313 09:24 AM
micromass

1 
36,191 
Sorry for thumb terminology, I just would like to grasp the main idea, as a physicist, without unnecessary...

Mar1712 08:25 PM
mclaudt

3 
1,923 
A quadratic diophantine equation is of form:
Ax^2 + Bxy + Cy^2 +Dx + Ey + F =0
Now, for A=0 and C=0,
Bxy + Dx...

Apr2312 03:06 PM
coolul007

3 
2,778 
Hi:
I`m new here, can someone tell me which is the difference between the transition matrix and the Jacobian?, I...

Mar1712 02:59 PM
lavinia

3 
1,508 
Hi everyone, I always have trouble on decomposing number into irreducible factors inside Gaussian integer field. I...

Mar2112 05:50 AM
Norwegian

3 
1,092 
Hello,
I have a linear algebra problem that I need help with.
Basically, I need to get the eigenvalues and...

Apr1212 09:13 AM
HallsofIvy

3 
4,153 
Say i have the following function:
f(x)= {45 , x<0.5
45 , x≥0.5}
where x\in R is a real variable in ....

Mar2312 12:20 AM
chuy52506

3 
1,970 
Given n by n matrices A, B, C. I know how to solve the Sylvester equation
AX + XB + C = 0
using the matlab...

Mar2612 03:24 AM
chiro

3 
1,656 
How the hell do you prove that the components of a vector w.r.t. a given basis are unique?
I have literally no idea...

Mar2612 01:38 PM
dodo

3 
932 
i am having trouble with some hw problems in my linear algebra course... the book is brescher and the teacher is sort...

Mar2812 10:41 AM
marathon

3 
2,512 
I am reading Kane's book on Reflections and Reflection Groups and am having difficulties with some basic geometric...

Mar3012 06:21 PM
Math Amateur

3 
943 
Hey,
I'm just trying to grasp ordering of groups and subgroups a little better,
I get the basics of finding the...

Mar3112 12:59 PM
jgens

3 
1,502 
let's say you are given the following matrix T:
T11 T12 . . . T1n
T21 T22 . . . T2n
. ...

Apr712 04:12 PM
morphism

3 
1,495 
Does anyone know of efficient software for the multiplication with an antitriangular matrix? These are matrices whose...

Apr412 12:36 PM
AlephZero

3 
1,062 
How would you prove, using the integral product, that the set of {cos x, cos 2x, cos 3x, cos 4x, ...} is an orthogonal...

Apr512 04:42 AM
chiro

3 
1,238 
if,
10x+1 divides nx
and 10x +1 divides 10n +1 , where x is a variable and positive integer while n is a...

Apr412 11:40 AM
sparsh12

3 
1,795 
On a finitedimensional vector space over R or C, is every norm induced by an inner product?
I know that this can...

Apr612 08:52 AM
morphism

3 
1,650 
Given a differential field F and a linear algebraic group G over the constant field C of F, find a PicardVessiot...

Apr1112 11:29 AM
morphism

3 
1,288 
So when dealing with a linear transformation, after we have computed the matrix of the linear transformation, and we...

Apr912 06:10 PM
stripes

3 
1,193 
i am having trouble understanding some of the "basic" concepts of my linear algebra...any help would be greatly...

Apr1312 07:04 PM
Sankaku

3 
1,488 
Hi! I am a new user who is not an expert with Linear Algebra at all.
I have some questions about eigen...

Apr1212 05:25 PM
HallsofIvy

3 
1,694 
Is it true that if an n by n matrix A has nlinearly independent eigenvectors, then it must also be invertible because...

Apr1612 11:28 AM
ajkoer

3 
2,315 
All the proofs I have seen for this theorem uses the same argument: First prove that the identity permutation has even...

Apr1712 05:38 PM
DonAntonio

3 
1,472 
I have a question; help is welcome.
Let sn be a linear, nonhomogeneous recurrence sequence, and let hn be a...

Apr1912 01:50 PM
dodo

3 
3,071 
Hi, I have read my notes and understand the theory, but I am having trouble understanding the following questions...

Apr1912 06:30 PM
juanma101285

3 
1,354 
Hi,
I have a square symmetrical matrix A (ugly I know)
321.1115, 57.5311, 33.9206
57.5311, ...

Apr1912 08:10 AM
Dr Bwts

3 
1,034 
 Jim Hefferon: Linear algebra
Theorem 1.5 (Gauss' method). If a linear system is changed to another by one of...

Apr2512 03:02 AM
isaac200

3 
1,337 
I am writing an undergraduate "thesis" on group representations (no original work, basically a glorified research...

Apr2412 08:51 AM
Stephen Tashi

3 
1,023 
in 1994, as most of you know, andrew wiles was the first to solve fermat's last theorem.. 3 years later chike obo...

Apr2212 04:10 PM
QuarkCharmer

3 
2,786 
Hi
I know the dimension is 3, two polynomials has dimension 2 only so it cannot span P2.
How would I go about...

Apr2412 09:38 AM
DonAntonio

3 
1,887 
Suppose I have a matrix that looks like this
2.415212e09 9.748863e10
2.415212e09...

Apr2512 03:21 AM
FoldHellmuth

3 
1,768 
So the equation is x'' + 10x' + 64x = 0
x(0) = 1
x'(0) = 0
I get general solution of e^(5t)(c1*cos(6.245t) +...

Apr2912 11:51 PM
FHamster

3 
1,413 
Hi all,
I got this question from a past exam paper does the point (8 , 4 , 5) lie on the plane 7x  3y + 4z = 8?...

Apr2812 01:15 PM
HallsofIvy

3 
2,014 
I'm having a hard time visualising them.
How do you plot vector fields
How do you plot spanning sets?
How do you...

May312 08:00 PM
chiro

3 
1,136 
Im having trouble under stand the relationships between determinats, span, basis.
Given a 3x3 matrix on R3 vector...

May812 04:37 PM
am_knightmare

3 
1,123 
Hi all. I have a quick question
In this wikilink en.wikipedia.org/wiki/Positivedefinite_matrix in the first...

May1112 08:00 PM
chiro

3 
1,108 
Hi all,
How do you find out if this Parametric equation
x = 2t + 3 ; y = t  1 ; z = 3t + 2
Is...

May1312 08:38 AM
HallsofIvy

3 
2,937 
Why is norm of (pauli matrix)/sqrt(2)=1

May1312 08:44 AM
HallsofIvy

3 
1,520 
Let \begin{equation*}
A=%
\begin{bmatrix}
0 & 1 & \cdots & n1 & n \\
1 & 0 & \cdots & n2 & n1 \\
\vdots &...

May1412 05:53 AM
tinytim

3 
1,592 
Hi:
I am a newbie to linear algebra; I have a problem about
vector space and subspaces. How to distinguish these...

May1712 05:44 PM
applechu

3 
1,048 
Hello,
The formulation of the question says:
Show, using congruences and disjunction of cases, which,for all...

May1712 08:09 PM
ramsey2879

3 
2,222 