1,872 reputation
618
bio website
location
age
visits member for 2 years, 6 months
seen 12 hours ago

Jan
29
asked Solving a Fourier sine transform equation
Jan
29
comment Every power series is the Taylor series of some $C^{\infty}$ function
When you say "given a sequence of real numbers $(a_n)_{n\in\mathbb{N}}$" in your first sentence, do you assume there exists a function $a(n)$ that can generate the $a_n$ for $n\in\mathbb{N}$. What if $a_n$ were "random"? What if I chose $a_n$ at random?
Jan
29
accepted Are Taylor series and power series the same “thing”?
Jan
28
revised $211!$ or $106^{211}$:Which is greater?
added 37 characters in body
Jan
28
answered $211!$ or $106^{211}$:Which is greater?
Jan
27
revised Solve $\cos(z)=\frac{3}{4}+\frac{i}{4}$
added 105 characters in body
Jan
27
comment How can I solve$\int \sin^3(x)dx$?
You really ought to use latex for the maths, e.g. type [dollar] \sin ^ 3 (x) [dollar], where [dollar] means the dollar sign.
Jan
26
revised Solve $\cos(z)=\frac{3}{4}+\frac{i}{4}$
deleted 41 characters in body
Jan
26
revised Solve $\cos(z)=\frac{3}{4}+\frac{i}{4}$
deleted 14 characters in body
Jan
26
answered Solve $\cos(z)=\frac{3}{4}+\frac{i}{4}$
Jan
26
revised Quarternionic Analysis
added 27 characters in body
Jan
26
revised Quarternionic Analysis
added 15 characters in body
Jan
25
revised Calculate the $\displaystyle\lim_{x\longrightarrow\infty} \left(\frac{x+\ln x}{x-\ln x}\right)^{\frac{x}{\ln x}}$.
Improved the title
Jan
25
suggested suggested edit on Calculate the $\displaystyle\lim_{x\longrightarrow\infty} \left(\frac{x+\ln x}{x-\ln x}\right)^{\frac{x}{\ln x}}$.
Jan
25
revised Calculate the $\displaystyle\lim_{x\longrightarrow\infty} \left(\frac{x+\ln x}{x-\ln x}\right)^{\frac{x}{\ln x}}$.
Improved the title
Jan
25
suggested suggested edit on Calculate the $\displaystyle\lim_{x\longrightarrow\infty} \left(\frac{x+\ln x}{x-\ln x}\right)^{\frac{x}{\ln x}}$.
Jan
25
revised Integrating $\int_0^\infty\frac{\log (1+z^2)}{e^z-1}dz$ using residue calculus.
[Edit removed during grace period]
Jan
25
comment Prove : $\left | a\sqrt{2}+b\sqrt{3} \right |> \frac{1}{350}$
Maybe the the triangle inequality could help? See en.wikipedia.org/wiki/Triangle_inequality
Jan
25
comment Are transcendental numbers dense in $\mathbb R$? What is algebraic number? Is $cos(\pi/13)$ algebraic?
try using \cos instead of just cos in the edit.
Jan
25
asked Quarternionic Analysis