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bio website mathtm.blogspot.com
location University of California Los Angeles, CA
age
visits member for 2 years, 3 months
seen Aug 18 at 8:50

I am a recent graduate in applied mathematics at UCLA and currently trying to break into the quantitative investment/trading industry while also continuing to pursue advanced graduate-level mathematics as both a hobby and career necessity.


May
29
revised If $f$ and $g$ are integrable functions on $I=[a,b]$ and if $h(x):=\inf(f(x), g(x))$ for all $x \in I$, prove that $h$ is integrable at $I$.
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May
29
revised If $f$ and $g$ are integrable functions on $I=[a,b]$ and if $h(x):=\inf(f(x), g(x))$ for all $x \in I$, prove that $h$ is integrable at $I$.
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May
29
revised If $f$ and $g$ are integrable functions on $I=[a,b]$ and if $h(x):=\inf(f(x), g(x))$ for all $x \in I$, prove that $h$ is integrable at $I$.
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May
29
answered If $f$ and $g$ are integrable functions on $I=[a,b]$ and if $h(x):=\inf(f(x), g(x))$ for all $x \in I$, prove that $h$ is integrable at $I$.
May
14
comment Bound on uniform norm of convolution of $L^p$ functions
Oh. I didn't even know that notation was still used!
May
13
comment Bound on uniform norm of convolution of $L^p$ functions
Don't you need $p^{-1}+q^{-1}=u^{-1}+1$?
May
13
answered Diffuse equation-type PDE: Help me!
May
12
comment How do I convert the limit definition of differentiability to different variables?
Because $h$ is just a displacement vector (from the point in question, $(x_{0},y_{0})$), and you send it to $0$. Being a vector, it has coordinates. Call them $(x,y)$, or anything you wish.
May
12
revised How do I convert the limit definition of differentiability to different variables?
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May
12
answered How do I convert the limit definition of differentiability to different variables?
May
12
revised A calculus problem with functions such that $f''(x) = g(x)$ and $g''(x) = f(x)$
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May
12
revised A calculus problem with functions such that $f''(x) = g(x)$ and $g''(x) = f(x)$
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May
12
answered A calculus problem with functions such that $f''(x) = g(x)$ and $g''(x) = f(x)$
May
12
answered Examine the convergence of $\left({\cos n\over n}\right)$
May
9
answered Show that $f \equiv 0$
May
9
comment Variation of parameters: $y''-y'-2y=4e^{-t}$
See extended answer above.
May
9
revised Variation of parameters: $y''-y'-2y=4e^{-t}$
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May
9
comment Variation of parameters: $y''-y'-2y=4e^{-t}$
Well isn't that the question of the day; have you even attempted to compute it on your own?!
May
9
comment Variation of parameters: $y''-y'-2y=4e^{-t}$
For example, $v_{1}$ (with my convention) is $-\int\frac{e^{2t}4e^{-t}}{3e^{t}}\;dt=-\frac{4}{3}\int\;dt=\frac{4}{3}t$.
May
9
comment Variation of parameters: $y''-y'-2y=4e^{-t}$
Yes. And just proclaiming you can't do it doesn't help us to help you. I don't understand what's so difficult here; you're just computing integrals at this point, something you should have had lots of practice in before taking your current ODE course.