Jean-Claude Arbaut
Reputation
9,553
84/100 score
 Dec 25 answered Measure theory for self study. Dec 24 answered On a recursive sequence exercise. Nov 16 answered Is the function determinant $A \rightarrow \det(A)$ a non-convex fuction? Nov 12 answered Is $\sqrt{x}$ uniformly continuous on $(0,1)$? Nov 12 answered Limit of $\frac{1-\cos(x)(\cos(2x))^2}{x^2}$ when $x\to0$ without L'Hôpital's rule? Nov 11 answered Value of the limit without (or with, but giving rigorous arguments) using the Taylor expansion of sin Nov 10 answered Is there a name for $2^n$ in combinatorics? Nov 10 answered How to show that the quadratic equation has solutions with real part negative? Nov 10 answered How do you build a square from this figure? Nov 6 answered How many ways can $p+q$ people sit around $2$ circular tables - of sizes $p,q$? Nov 4 answered Solving a differential equation involving a trigonometric function Oct 28 answered How to calculate $\int_0^{\pi/2} \sqrt[3]{\mathrm{cotg}\; x} \;\mathrm{d}x$ Oct 28 answered Have i understood Fermat little theorem and Euler's theorem correctly? Oct 27 answered Two numbers equality formula Oct 25 answered Why is it valid to find $C$ in $\int f(x)dx=g(x)+C$ by plugging in $x=0$? Oct 25 answered Determine if $\sum_{n=2}^{\infty} \frac{(-1)^n}{n+(-1)^n}$converges or diverges Oct 10 answered Middle cancellation in agroup Oct 10 answered Modulus Equations Oct 8 answered When solving for eigenvector, when do you have to check every equation? Oct 8 answered The number of solutions of the equation $4\sin^2x+\tan^2x+\cot^2x+\csc^2x=6$ in $[0,2\pi]$