ChrisS
 Name:
 Chris Sterling
 School:
 Virginia Commonwealth University
 About:
 Math major
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Questions Asked

ChrisS:
Group Title
Side AB of square ABCD is extended to point P so that BP = 2(AB). With M at the midpoint of DC, BM intersects AC at point Q. Also PQ inters…
 updated 9 months ago
 1 reply
 No Medals Yet
Mathematics

ChrisS:
Group Title
Closed Subsets of Real Numbers
Could someone confirm my understanding of this definition?
…
 updated 10 months ago
 7 replies
 2 Medals
Mathematics

ChrisS:
Group Title
Studying for a quiz in my advanced calculus class. Got a list of things I need to be able to define and can't find this one in my notes or …
 updated 10 months ago
 No Medals Yet
Mathematics

ChrisS:
Group Title
Change the Cartesian integral \[\int\limits_{0}^{2}\int\limits_{y}^{\sqrt{4y^2}}xdxdy\]into an equivalent polar integral. Then evaluate th…
 updated one year ago
 29 replies
 3 Medals
Mathematics

ChrisS:
Group Title
Find f:Natural rightarrow(0,1) that is 11
Hopefully I already have the answer I just want someone to confirm it. It's been over a year …
 updated one year ago
 12 replies
 1 Medal
Mathematics

ChrisS:
Group Title
I am tasked with doing a position paper on the use of technology in the mathematics classroom. I think doing something on openstudy would s…
 updated one year ago
 3 replies
 3 Medals
Mathematics

ChrisS:
Group Title
Evaluate \[\int\limits\int\limits_{R}\frac{x+2y}{\cos(xy)}dA \]
where R is the parallelogram bounded by the lines y=x, y=x1, x+2y=0, and …
 updated 2 years ago
 30 replies
 2 Medals
Mathematics

ChrisS:
Group Title
It seems to me that with the change that an asker can only give one medal per question now encourages users to give an answer over a hint or…
 updated 2 years ago
 52 replies
 No Medals Yet
Mathematics

ChrisS:
Group Title
Studying for a test for tomorrow. Just hoping to throw out some things/questions to make sure I'm on the right track. The test is in Algeb…
 updated 2 years ago
 10 replies
 1 Medal
Mathematics

ChrisS:
Group Title
Compute the product in the given ring:
(12)(16) in \[\mathbb{Z}_{24}\]
…
 updated 2 years ago
 3 replies
 1 Medal
Mathematics

ChrisS:
Group Title
Could someone explain to me what an accumulation point is in fairly plain language? I have a definition here but it's not really clicking f…
 updated 2 years ago
 21 replies
 2 Medals
Mathematics

ChrisS:
Group Title
Just want to make sure I'm doing this right.
\[\lim_{(x,y)>(0,0)} \frac{x^{3}+xy^{2}}{x^{2}+y^{2}}\]
…
 updated 2 years ago
 10 replies
 4 Medals
Mathematics

ChrisS:
Group Title
Determine whether the given map \[\phi\] is an isomorphism of the first binary structure with the second. If it is not an isomorphism, why…
 updated 2 years ago
 14 replies
 1 Medal
Mathematics

ChrisS:
Group Title
How many sets of three integers between 1 and 20 are possible if no two consecutive integers are to be in a set?
 updated 2 years ago
 21 replies
 2 Medals
Mathematics

ChrisS:
Group Title
A committee of five people is to be chosen from a club that boasts a membership
of 10 men and 12 women. How many ways can the committee be …
 updated 2 years ago
 8 replies
 1 Medal
Mathematics

ChrisS:
Group Title
Would someone mind checking this for me?
Find the center and radius of the sphere given by the equation…
 updated 2 years ago
 8 replies
 2 Medals
Mathematics

ChrisS:
Group Title
Prove or disprove: There exists a bijective function
\[f:\mathbb{Q} \rightarrow \mathbb{R}\]
…
 updated 2 years ago
 10 replies
 1 Medal
Mathematics

ChrisS:
Group Title
Prove that the set
\[A=\left\{ (m,n)\in \mathbb{N}\ x\ \mathbb{N}:\ m \le n \right\}\]
is countably infinite.
 updated 2 years ago
 3 replies
 1 Medal
Mathematics

ChrisS:
Group Title
I need a bijection between \[\mathbb{R}\ and\ (\sqrt{2},\infty)\]
 updated 2 years ago
 3 replies
 2 Medals
Mathematics

ChrisS:
Group Title
\[<f,g>=\int\limits_{1}^{1}f(x)g(x)dx\]
\[f(x)=x\]
\[g(x)=x ^{2}x+2\]…
 updated 2 years ago
 22 replies
 1 Medal
Mathematics

ChrisS:
Group Title
If a is a natural number, then there exist two unequal natural numbers k and l for which
\[a ^{j}a ^{k}\] is divisible by 10.
…
 updated 2 years ago
 10 replies
 2 Medals
Mathematics

ChrisS:
Group Title
A function f:ZxZ > Z defined as f(m,n)=3n4m.
How would I show this is surjective?
 updated 2 years ago
 4 replies
 1 Medal
Mathematics

ChrisS:
Group Title
Is my reasoning correct?
A function f: Z > ZxZ defined as f(n)=(2n, n+3) is injective because for all n, 2n and n+3 will map to one and on…
 updated 2 years ago
 2 replies
 1 Medal
Mathematics

ChrisS:
Group Title
Suppose R is a symmetric and transitive relation on a set A, and there is an element a in A for which aRx for every x in A. Prove that R is…
 updated 2 years ago
 2 replies
 1 Medal
Mathematics

ChrisS:
Group Title
I was looking at the list of achievements, and I know I have done some of those things but my achievements are still at 0. I was wondering…
 updated 2 years ago
 5 replies
 3 Medals
Mathematics

ChrisS:
Group Title
Am I understanding this right?
The set of all 2x2 matrices of the form \[\left[\begin{matrix}a & b \\ c & 1\end{matrix}\right]\] would not…
 updated 2 years ago
 11 replies
 1 Medal
Mathematics

ChrisS:
Group Title
Need help proving
…
 updated 2 years ago
 32 replies
 3 Medals
Mathematics

ChrisS:
Group Title
How would I go about proving that if a matrix is invertible, then so is its adjoint?
 updated 2 years ago
 15 replies
 4 Medals
Mathematics