7,968 reputation
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bio website linkedin.com/in/gt6989b
location New York, NY
age 36
visits member for 3 years, 3 months
seen Dec 17 at 4:26

Mar
5
comment Could someone walk me through this pde?
@FraserPrice please see the edit.
Mar
5
revised Could someone walk me through this pde?
added 482 characters in body
Mar
5
answered Approximation to $\sqrt{\cos(\theta)}$?
Mar
5
answered Could someone walk me through this pde?
Mar
5
revised Could someone walk me through this pde?
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Mar
5
comment Logarithmic Differentiation
@Phantom yes, exactly
Mar
5
revised Logarithmic Differentiation
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Mar
5
answered Logarithmic Differentiation
Mar
5
answered Compute limit of sequence
Mar
5
revised Compute limit of sequence
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Mar
3
comment Integral of $h(t)$ is $9/5t$
@user3376379 edited
Mar
3
comment Closed form of $\sum \frac{x^n}{n^n}$
WolframAlpha does evaluate at specific $x$ if you want to play with at least the order of the result -- wolframalpha.com/input/…
Mar
3
revised Integral of $h(t)$ is $9/5t$
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Mar
3
revised monotone convergence question
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Mar
3
comment Need help with $\int_0^\infty\frac{\log(1+x)}{\left(1+x^2\right)\,\left(1+x^3\right)}dx$
@nayrb i did not mean by parts, straight substition yields $u du$ divided by some exponentials.
Mar
3
answered Need help with $\int_0^\infty\frac{\log(1+x)}{\left(1+x^2\right)\,\left(1+x^3\right)}dx$
Mar
3
comment Need help with $\int_0^\infty\frac{\log(1+x)}{\left(1+x^2\right)\,\left(1+x^3\right)}dx$
Surely $$ \int_0^\infty \frac{\log(1+x)}{(1+x^2)(1+x^3)} \leq \int_0^\infty \frac{x}{(1+x^2)(1+x^3)} < +\infty... $$
Mar
3
answered Integral of $h(t)$ is $9/5t$
Mar
3
comment What is the conditional probability $P(X \gt 0 \mid X + Y \gt 0)$?
I wanted to ask your advice - you have been around much more than me :-). On questions like this, how do you determine when to post answers (like yours, pretty much doing it for the OP), when to post hints, and when to just comment asking the OP to state his own thoughts in order not to do the hw for him?
Mar
3
comment prove, $\int_0^x \left (\sum_{n=0}^\infty a_nt^n \right ) \ dt = \sum_{n=0}^\infty a_n \frac{x^{n+1}}{n+1}$
@DanielFischer sorry, just being dumb