2,415 reputation
932
bio website
location Canada
age 32
visits member for 1 year, 10 months
seen 9 hours ago

I hold a diploma in Network Administration (along with many industry certifications) and am currently studying Computer Science and Pure Math in University.


Oct
16
comment Need help with starting proof
OK, I think I see it now - $b-L$ gives the distance between $L$ and $b$, likewise for $L-a$... So the minimum of the two is guaranteed to be within the interval $(a,b)$.
Oct
16
comment Need help with starting proof
I think so, not sure.
Oct
16
comment Need help with starting proof
I'm not sure I follow why we choose that $N(\epsilon)$...
Oct
16
asked Need help with starting proof
Oct
15
comment Calculate $\lim_{n\to\infty}\frac{1+a+a^2+\dots+a^n}{1+b+b^2+\dots+b^n}$
What if it evaluates to $\infty/\infty$? I was always told that this is not definitive, and might require L'Hopital's rule... It may converge and may not.
Oct
15
asked Calculate $\lim_{n\to\infty}\frac{1+a+a^2+\dots+a^n}{1+b+b^2+\dots+b^n}$
Oct
14
comment How to solve $9^{89}\equiv x\mod{1000}$ for $0\leq x\leq 999$ without calculating $9^{89}$
Is there any particular reason why you changed $(10-1)$ to $-(1-10)$?
Oct
14
accepted What is an intuitive definition of the zero vector?
Oct
14
accepted Construct a basis for $\mathbb{R}^4$ given two vectors and any two of the standard basis vectors in $\mathbb{R}^4$
Oct
14
accepted Number theory GCD word problem
Oct
14
accepted Can a matrix have a null space that is equal to its column space?
Oct
14
accepted If matrices $B$ and $AB$ have the same rank, show that they have the same null spaces.
Oct
14
accepted Prove that the Diophantine equation $ax+by+cz=e$ has a solution if and only if $(a,b,c)\mid e$.
Oct
14
accepted Formally prove: $\lim_{n\to\infty}x_n=L_1\Longrightarrow\lim_{n\to\infty}x_{n+k}=L_1,\forall k\in\mathbb{N}$
Oct
14
accepted How can I prove that one of $n$, $n+2$, and $n+4$ must be divisible by three, for any $n\in\mathbb{N}$
Oct
14
accepted How to show that $\sum_{i=0}^{n-1}x^i=\frac{1}{1-x}-x^n=\frac{x^n-1}{x-1}$
Oct
14
asked How to solve $9^{89}\equiv x\mod{1000}$ for $0\leq x\leq 999$ without calculating $9^{89}$
Oct
14
asked Find the units digit in the number $7^{9999}$.
Oct
14
asked How to prove that a function is well defined?
Oct
13
revised How does one determine for which value of $z_0$ the equation $ax+by=z$ has positive integer solutions $(x,y)$ for all $z\geq z_0$?
added 322 characters in body; edited title