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3h
asked Solving the IVP given by $\dot x=\frac{t-x}{t+x}$ and $x(0)=1$
1d
asked Gaussian integral $\int_{-\infty}^\infty \exp(-(x+\mathrm iY)^2)\,\mathrm d x$ along $[-R,R]+\mathrm i[0,Y]$
1d
asked Why does $z\mapsto \exp(-z^2)$ have an antiderivative on $\mathbb C$?
2d
asked Contour integrals along $\gamma(t)=t+\mathrm it^\alpha$ and a rectangle
2d
asked Probability space for zebras and their number of stripes
Apr
24
answered $(x-x_0)^0$ in power series
Apr
24
asked Holomorphic, entire functions and the Cauchy-Riemann equations
Apr
21
asked Show that a power series is analytic inside its radius of convergence
Apr
16
asked Exact differential equation $f(t,x)+g(t,x)\dot x=0$ and constants
Apr
16
asked When is $\sin\colon\mathbb{C}\to\mathbb{C}$ purely real/imaginary?
Apr
1
asked Simplify $(n+1)^{1/\sqrt{n}}$ and $(n^2+1)^{1/n}$
Mar
29
asked Issues computing $\int\cos^2x~\mathrm{d}x$ without using $\sin^2(x)=1-\cos^2(x)$
Mar
26
answered Prove the series $\sum_{n=1}^∞ (-1)^n(n)/(n+2)$ diverges
Mar
24
asked Show $\sum_{k=1}^\infty \frac{k^2}{k!} = 2\mathrm{e}$
Feb
12
asked Deducing the series expansion of $\arctan(x^2)$ via the series expansion of $\arctan(x)$ at $x=0$
Jan
27
asked Multivariable taylor series expansion of $\exp(-(x^2+y^2))$
Jan
21
asked Eigenvectors of $\begin{pmatrix}6&2\\-10&-1\end{pmatrix}$ (linear equations with complex numbers)
Dec
13
asked ELI5: What are pointwise and uniform convergence and what is the difference?
Dec
9
answered Continuous function taking each of its values twice
Dec
9
answered Show $\sin(\frac{\pi}{3})=\frac{1}{2}\sqrt{3}$