Christian Ivicevic
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 Feb 12 accepted Deducing the series expansion of $\arctan(x^2)$ via the series expansion of $\arctan(x)$ at $x=0$ Feb 12 comment Deducing the series expansion of $\arctan(x^2)$ via the series expansion of $\arctan(x)$ at $x=0$ So we must show that the replacement still yields a valid power series and that it has the same radius of convergence? Feb 12 asked Deducing the series expansion of $\arctan(x^2)$ via the series expansion of $\arctan(x)$ at $x=0$ Jan 27 accepted Multivariable taylor series expansion of $\exp(-(x^2+y^2))$ Jan 27 comment Multivariable taylor series expansion of $\exp(-(x^2+y^2))$ Am I right in assuming that $-\exp(-5)(4x+2y-11)$ would be the right polynomial in my case? Jan 27 revised Multivariable taylor series expansion of $\exp(-(x^2+y^2))$ added 106 characters in body Jan 27 asked Multivariable taylor series expansion of $\exp(-(x^2+y^2))$ Jan 22 revised Eigenvectors of $\begin{pmatrix}6&2\\-10&-1\end{pmatrix}$ (linear equations with complex numbers) tried to include the matrix in the title Jan 22 accepted Eigenvectors of $\begin{pmatrix}6&2\\-10&-1\end{pmatrix}$ (linear equations with complex numbers) Jan 21 comment Eigenvectors of $\begin{pmatrix}6&2\\-10&-1\end{pmatrix}$ (linear equations with complex numbers) @Prospect I do know the algorithm but I am struggling with the particular steps in this specific case. Jan 21 asked Eigenvectors of $\begin{pmatrix}6&2\\-10&-1\end{pmatrix}$ (linear equations with complex numbers) Dec 15 accepted ELI5: What are pointwise and uniform convergence and what is the difference? Dec 13 revised ELI5: What are pointwise and uniform convergence and what is the difference? Fixed tags. Dec 13 asked ELI5: What are pointwise and uniform convergence and what is the difference? Dec 9 comment Continuous function taking each of its values twice It seems I am misunderstanding something in regards to the claim from the paper as all examples that come to mind have a finite amount of discontinuities. Dec 9 answered Continuous function taking each of its values twice Dec 9 comment Continuous function taking each of its values twice Every function that satisfies this property has an infinite number of discontinuities. Refer to ams.org/journals/proc/1986-098-02/S0002-9939-1986-0854049-8/… Dec 9 answered Show $\sin(\frac{\pi}{3})=\frac{1}{2}\sqrt{3}$ Dec 9 comment Using L Hopital's Rule Using $e$ $e=\exp(1) \rightarrow (\exp(1))'=(1)'\cdot\exp(1)=0$ as AndreasT mentioned. Dec 9 accepted Show that $\int_1^\infty \frac{\ln x}{\left(1+x^2\right)^\lambda}\mathrm dx$ is convergent only for $\lambda > \frac{1}{2}$