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Mar
2
comment Correct set notation for “all integers which are not multiples of 7”?
Don't forget about the simplest one: $\{ x : \text{x is not a multiple of 7} \}$.
Feb
22
awarded  Popular Question
Feb
3
awarded  Nice Question
Jan
28
awarded  Nice Question
Dec
25
comment What is the limit of $f(x)=\lim_\limits{n\to \infty}\frac{x^n}{x^n+3}$ when $x$ tends to a certain point?
Please don't write things like $x^n = \infty$.
Dec
22
awarded  Enlightened
Dec
22
awarded  Nice Answer
Dec
22
revised Fourier series for $\sin x$ is zero?
deleted 1 character in body
Dec
22
answered Is it 'more rigorous' to perform definite integrations, rather than indefinite integration while solving ODEs?
Dec
21
accepted What kind of object is the push forward of a vector field?
Dec
20
asked What kind of object is the push forward of a vector field?
Dec
7
comment How to determine if an equation is algebraically solvable?
I know that. What I tried to say is that just because a polynomial is of degree $> 4$ doesn't mean it isn't algebraically solvable, only that there is no general solution for all polynomials of that degree.
Dec
7
comment How to determine if an equation is algebraically solvable?
So $x^5-1=0$ doesn't have a closed form solution because it has degree 5?
Oct
24
awarded  Yearling
Oct
16
answered Solving an equation of real numbers
Oct
9
comment Why do we use square in measuring a qubit with probability?
@HamedBaghalGhaffari: Whether or not it's an advantage is irrelevant; the reason we use the squares is that this is how the world works; the laws of physics, which are found from experiment, say so.
Sep
30
comment Different ways finding the derivative of $\sin$ and $\cos$.
Do you mean you define $\cos$ and $\sin$ as the real and imaginary parts of $e^{ix}$, or the other way around?
Sep
21
awarded  Notable Question
Sep
10
revised What is $2!!!!!!!!!!!!!!!!!!!!$… (up to?
edited title
Aug
22
answered Proof for parallelogram law of vector addition