Javier
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 Jul 15 asked Motivation for definition of logarithm in Feynman's Lectures on Physics Jul 15 comment Is the function $y=\ln x^2$ the same as $y=2\ln |x|$? Short answer: yes. Jul 14 revised Problems regarding exponents Not smart to use the same letters as in the assignments Jul 14 comment Problems regarding exponents @Rick: Yeah, I think I'll change it. Thanks for the advice! Jul 14 answered Problems regarding exponents Jul 7 comment I have to show $(1+\frac1n)^n$ is monotonically increasing sequence Unless I'm missing something, that sequence is increasing, not decreasing. Jul 1 accepted Does this weird sequence have a limit? Jun 30 comment Does this weird sequence have a limit? That's interesting. Does this change if instead of picking a number from ${1,2,3,4,5,6}$ we choose a random real number, or maybe one from the interval $[0,1]$? Jun 30 comment Does this weird sequence have a limit? @anon: Making a needlessly complicated definition was sort of the point. Also, you don't necessarily have to choose $k$ randomly. You can start from $1$ and work your way up if you want; the point is not so much in what order the terms are calculated, but that you can calculate $a_k$ for any $k$ you want. Jun 30 comment Does this weird sequence have a limit? @AndréNicolas: What I mean if that $a_k$ has already been calculated, there is no need to roll the die again. We just look at the list and check what was the value of $a_k$. Jun 30 asked Does this weird sequence have a limit? Jun 24 awarded Nice Question Jun 23 revised Expanding out summation signs transformed image into latex, hope I read it right Jun 23 suggested approved edit on Expanding out summation signs Jun 23 comment If a function has a finite limit at infinity, does that imply its derivative goes to zero? Also, a nitpick: shouldn't it be $x > 0$ instead of $x \ge 0$? Jun 23 comment If a function has a finite limit at infinity, does that imply its derivative goes to zero? This is the answer I like more, simply because you provided a function for which it is easy to check that it's a counterexample (just differentiate and take limits). Thanks! Jun 23 accepted If a function has a finite limit at infinity, does that imply its derivative goes to zero? Jun 23 asked If a function has a finite limit at infinity, does that imply its derivative goes to zero? Jun 20 awarded Nice Question Jun 8 awarded Caucus