Mario De León Urbina

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699 reputation
310
bio website
location Costa Rica
age 25
visits member for 2 years, 8 months
seen 12 hours ago

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


Apr
14
asked If $x + \frac{1}{x} = k$, what's the value of this sum?
Mar
12
answered Exponential equation with one 'trouble' term
Feb
20
answered Proving $U_{\varepsilon}(a)\cap V_{\varepsilon}(b)=\emptyset$
Jan
22
answered Prove $2^n\cdot n! ≤ (n+1)^n$ by induction.
Jan
20
answered The ratio of two numbers is $7$ to $5$. The sum of the numbers is $24$. What are the numbers?
Jan
20
asked Teaching irrational numbers?
Jan
20
answered How to factorize $2x^2+5x+3$?
Jan
16
answered Determine $\lim_{(x, y)\to (0, 0)}\frac{-x+y+1}{x^2-y^2}$
Jan
16
answered Binomial theorem for non integers ? O_o ??
Jan
16
answered Where is a flaw in these logical implications?
Jan
15
asked Exponential equations solving methods?
Jan
9
answered Pedagogy: How to cure students of the “law of universal linearity”?
Jan
9
answered Why is $\tan((1/2)\pi)$ undefined?
Jan
8
answered Exponential equation+derivative
Jan
8
answered Prove that $ \displaystyle \lim\limits_{n \rightarrow \infty} \left(\frac{23n+2}{4n+1}\right) = \frac{23}{4} $.
Jan
8
answered $\lim_{n\rightarrow \infty }{a_n}^{b_n}=\alpha ^\beta $?
Dec
4
answered Prove that if $x$ is a non-zero rational number, then $\tan(x)$ is not a rational number and use this to prove that $\pi$ is not a rational number.
Dec
2
asked Question about $f$ continuous function with these conditions?
Oct
15
asked Show that $\int_0^\infty e^{-x^2} \sin{2xb}\, dx =e^{-b^2}\int_0^b e^{x^2} \, dx, \, b>0, $?
Jul
2
asked Examples of Metaphors in Statistics and Probability?