178 reputation
7
bio website
location Lima, Perú
age 21
visits member for 2 years, 7 months
seen Dec 3 at 11:47

Estudiando por el momento en la universidad nacional mayor de San Marcos, Lima, Perú. Programador amateur, matemático de la misma forma y apasionado por la música :F


Mar
16
comment Notation for multiple of a number?
Old teachers, a couple of friends.
Oct
10
comment Derivative of square of derivative?
Thanks for the answer!
Oct
10
comment Derivative of square of derivative?
The first one: $$\frac{d}{dy}\bigg(\frac{dy}{dx}\bigg)^2$$
Oct
10
comment Derivative of square of derivative?
This is okay, but I wanted to get is $\frac{d}{dy}z$ not $\frac{d}{dx}z$
Oct
10
comment Derivative of square of derivative?
I have tried it, but when I try to integrate it can't seem to get the original expression.
Jul
23
comment Help on differential equation $y''-2\sin y'+3y=\cos x$
Yes, it is $-2\sin y'$
Jul
17
comment Laplace transform of $ \int_1^\infty\frac{\cos t}{t}dt$
ok, thanks. I just hope I don't have to solve the integral
Jul
11
comment Convergence of $\sum_{n=0}^\infty(-1)^n\frac{4^{n-2}(x-2)}{(n-2)!}$
thanks a lot! this should convince my teacher
Jul
11
comment Convergence of $\sum_{n=0}^\infty(-1)^n\frac{4^{n-2}(x-2)}{(n-2)!}$
I sincerely don't know, my teacher asked me that question a week ago and today when he gave me back my exam, it says that the answer was wrong, so I'm trying to find what theorem I should use that $x$ is a constant, I'm pretty sure my teacher doesn't really care about the $(n-2)!$
Jul
11
comment Convergence of $\sum_{n=0}^\infty(-1)^n\frac{4^{n-2}(x-2)}{(n-2)!}$
That's what I'm trying to prove, that $x$ works as a constant, and yes, it is $(n-2)!$ but I can change it to $\Gamma(n-1)$
Jul
11
comment Convergence of $\sum_{n=0}^\infty(-1)^n\frac{4^{n-2}(x-2)}{(n-2)!}$
Is just $(x-2)$
Jul
10
comment Epsilon delta proof of a sequence
Thanks!, I will have to practice a lot from now
Jul
10
comment Epsilon delta proof of a sequence
The limit of the sequence is 1, but I have to prove the limit.