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 Mar 7 asked Random walk and expected value Feb 16 answered Definite integral involving arctan and tan Nov 4 answered Evaluating $\lim\limits_{n \to \infty} (\int _a^b|f(x)|^ndx)^\frac 1n=\max\limits_{x\in[a,b]}|f(x)|$ Nov 4 answered Integral from zero to infinity of $\int_0^{\infty}\frac{(1-e^{-\lambda z})}{\lambda^{a+1}} d \lambda$ Nov 4 answered Show that if $x>0$, then $\ln(x)\geq 1-\frac{1}{x}$ Oct 31 asked Integration in n-spherical coordinates Oct 13 asked Divergence in spherical coordinates May 24 asked Improper integral and special functions Sep 16 answered Find the functions family that satisfies the inequality $\int_0^1 \frac{dx}{1+f^{2}(x)} <\frac{f(1)}{f'{(1)}}$ Aug 20 answered Solving the integral $\int_{0}^{\infty} \frac{\sin{x}}{x} \ dx = \frac{\pi}{2}$? Jul 14 asked Sum equals integral Jun 28 answered Solving a complex integral Jun 26 answered Visualizing Commutator of Two Vector Fields Jun 26 answered Solving the integral $\int_{0}^{\infty} \frac{\sin{x}}{x} \ dx = \frac{\pi}{2}$? Jun 26 answered Two sums for $\pi$ Jun 25 answered A linear differential equation Jun 24 answered Series Expansion Jun 23 asked A linear differential equation Jun 22 answered Prove that: $\int_{0}^{1} \frac{x^{4}\log x}{x^2-1}\le \frac{1}{8}$ Jun 22 answered Computing the derivative from the definition