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visits member for 4 years, 1 month
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I like to do the math


Jan
20
asked Solution of a nonlinear ODE
Jan
18
answered ODEs with constant coefficients
Jan
18
asked Integrating a certain ODE
Jan
13
asked Does the analytic solution of explicit scheme increase with time?
Jan
11
revised How to see that solution of PDE increases with time
added 34 characters in body
Jan
11
revised How to see that solution of PDE increases with time
added 19 characters in body
Jan
11
asked How to see that solution of PDE increases with time
Jan
8
revised An inequality arising when dealing with 2 norm
deleted 2 characters in body
Jan
7
asked An inequality arising when dealing with 2 norm
Nov
27
comment To verify that a sequence of functions is increasing
I understand what you saying, $f_n$ is just $e^{-x}$ when $x\leq n$, but I how should I put it in writing. Please elaborate.
Nov
22
comment To verify that a sequence of functions is increasing
So how is it done
Nov
20
comment To verify that a sequence of functions is increasing
Ok, so to verify this, I take $x_1<n<x_2<n+1$. Therefore $f_n(x_1)=f_{n+1}(x_1)$ and $f_n(x_2)=0\leq f_{n+1}(x_2)$ since $f_{n+1}(x_2)>0$. So in both cases $f_n(x)\leq f_{n+1}(x)$. Is my reasoning good?
Nov
20
asked To verify that a sequence of functions is increasing
Oct
28
comment How to prove that Lebesgue outer measure is translation invariant?
thanks, @PrahladVaidyanathan
Oct
28
asked How to prove that Lebesgue outer measure is translation invariant?
Sep
26
asked Derive the $m$thly death benefit in terms of the annual benefit
Sep
21
awarded  Notable Question
Sep
6
accepted How to prove a certain maximum principle
Sep
5
comment How to prove a certain maximum principle
where can I find this kind of material.
Aug
27
asked Exponential inequality with small parameter