# Mario De León Urbina

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bio website location Costa Rica age 25 member for 2 years, 8 months seen Apr 17 at 16:02 profile views 229

I'm bachelor of Math Teaching and Economics student in the UCR. I love maths. $\sqrt { God} = love$

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 Apr14 comment Prove that a sequence is a Cauchy sequence. What happens if we have $|s_{n+1}-s_n|< \frac{1}{n}$? Apr14 comment If $x + \frac{1}{x} = k$, what's the value of this sum? The initial problem is with $k=3$, but I'm thinking about consequences if $k$ is a real positive 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 $U_{\varepsilon}(a)\cap V_{\varepsilon}(b)=\emptyset$ Jan29 accepted Teaching irrational numbers? Jan22 revised Prove $2^n\cdot n! ≤ (n+1)^n$ by induction. [Edit removed during grace period] Jan22 answered Prove $2^n\cdot n! ≤ (n+1)^n$ by induction. Jan20 accepted Question about $f$ continuous function with these conditions? 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 $\lim_{(x, y)\to (0, 0)}\frac{-x+y+1}{x^2-y^2}$ Jan16 answered Binomial theorem for non integers ? O_o ?? Jan16 revised Where is a flaw in these logical implications? added 191 characters in body Jan16 answered Where is a flaw in these logical implications? Jan16 comment Where is a flaw in these logical implications? How did you derived that \$a