Mario De León Urbina
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 Dec12 asked How can I determine the center of this circumference? Nov25 answered Find the value of $\sqrt{10\sqrt{10\sqrt{10…}}}$ Nov5 asked What's the solution set $S \subset \mathbb{R}^2$ of this equation? Nov5 asked Better substitution calculating integral? Oct31 asked Am I doing something wrong with this improper integral? Oct29 asked Calculating indefinite integral? Jul20 answered Examples of interesting integrable functions with at least 2 fixed points and an explicit inverse Jul17 asked How can I define a “formula” for general term of a sequence with some given values? Jul1 asked Solving logarithmic equation? Jun3 asked I need a help with this limit? May26 asked How do I $n\lambda ^n$ tends to $0$? May13 asked Continuous function is $0$ for all real number? Apr14 asked If $x + \frac{1}{x} = k$, what's the value of this sum? Mar12 answered Exponential equation with one 'trouble' term Feb20 answered Proving $U_{\varepsilon}(a)\cap V_{\varepsilon}(b)=\emptyset$ Jan22 answered Prove $2^n\cdot n! ≤ (n+1)^n$ by induction. Jan20 answered The ratio of two numbers is $7$ to $5$. The sum of the numbers is $24$. What are the numbers? Jan20 asked Teaching irrational numbers? Jan20 answered How to factorize $2x^2+5x+3$? Jan16 answered Determine $\lim_{(x, y)\to (0, 0)}\frac{-x+y+1}{x^2-y^2}$