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Jul
28
answered Convex sets in $\mathbb R^n$: Do they have a particular form ? Does the gradient of a linear convex function $f$ exist on such a set?
Jul
27
answered Are convex functions enough to determine a measure?
Jul
24
answered inverse a function with exponential and first degree polynom
Jun
10
answered Find minimum value of $|2z-1|+|3z-2|;\,\,z\in\mathbb{C}$?
Jun
10
answered Diffeomorphism of the sphere
Jun
10
answered How to solve $e^{ix}=i$?
Jun
4
answered What is the solution of cos(x)=x?
May
25
asked Rewrite trigonometric expression to be be numerically “stable”
May
21
answered Can I prove Pythagoras' Theorem using that $\sin^2(\theta)+\cos^2(\theta)=1$?
Apr
6
asked Nice application of fixed point theorems
Mar
14
answered Help understanding the proof for the infinity case of L' Hopital's Rule.
Mar
14
answered A 'different' explanation to “Supremum”
Mar
14
answered Prove that $ n^2$ tends to infinity as $n$ tends to infinity
Feb
15
answered Proving that lines from any vertex of a parallelogram to the midpoints of the opposite sides trisect a diagonal
Feb
14
answered Proof that the $\lim\limits_{x \to 2}\dfrac{1}{x} = \dfrac{1}{2}$ using the $\epsilon$-$\delta$ definition of limits (verification).
Feb
7
answered Question about non conservative vector field
Feb
5
answered Prove that $\ln x$ is not uniformly continuous on $(0,1]$
Feb
3
answered Is $f(x,y)$ differentiable at the origin?
Feb
2
answered Let $g: [a, b] \rightarrow \mathbb R$ integrable and $g \ge 0 $. If $\int_a^b g = 0$
Feb
2
answered Weird integration issue: $\ln(x+1)=\ln(2x+2)$ ?!