Mario De León Urbina

less info
779 reputation
511
bio website
location Costa Rica
age 26
visits member for 3 years
seen Aug 17 at 4:25

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


Jan
15
asked Exponential equations solving methods?
Jan
15
revised Exponential equation+derivative
added 397 characters in body
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
revised Exponential equation+derivative
added 149 characters in body
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
awarded  Revival
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
23
accepted Show that $\int_0^\infty e^{-x^2} \sin{2xb}\, dx =e^{-b^2}\int_0^b e^{x^2} \, dx, \, b>0, $?
Oct
15
revised Show that $\int_0^\infty e^{-x^2} \sin{2xb}\, dx =e^{-b^2}\int_0^b e^{x^2} \, dx, \, b>0, $?
added 50 characters in body
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, $?
Oct
5
comment $\sqrt a$ is either an integer or an irrational number.
Yeah! Niven's Proof!
Oct
2
awarded  Critic
Aug
18
awarded  Yearling
Aug
16
comment How many integers between $1000$ and $9999$ have distinct digits?
You're right AWertheim.
Jul
4
accepted Examples of Metaphors in Statistics and Probability?
Jul
2
comment Examples of Metaphors in Statistics and Probability?
For example, for the concept of "function" we use the metaphor "function is a machine", or for prime numbers: "prime numbers are the bricks of whole numbers".