FUZxxl
Reputation
1,869
Next privilege 2,000 Rep.
 Jan17 accepted Question about a lemma on continuity Jan17 comment Question about a lemma on continuity @Arturo Sorry. That was a translation mistake. In German, one says "stetig" to say "continuous". stetig and steady are false friends... Jan17 revised Question about a lemma on continuity added 8 characters in body Jan17 asked Question about a lemma on continuity Jan8 comment Given the cartesian coordinates of four points, how to calculate the interection of two lines they form? @J.M. Oh yeah. That looks good. THank you! BTW, is there a solution that use the $r,\vartheta$ representation instead? Jan8 comment Given the cartesian coordinates of four points, how to calculate the interection of two lines they form? @J.M. Of course. This possibility is ruled out. Jan8 asked Given the cartesian coordinates of four points, how to calculate the interection of two lines they form? Jan1 awarded Yearling Dec18 revised Find function if known some limit Formatting Dec18 suggested approved edit on Find function if known some limit Dec8 awarded Nice Question Dec2 comment Defining division by zero @picakhu You are going to run into problems when calculating limits. Just consider $\lim_{n\to0}\frac{2n}n$. Using your method, one gets $\frac{\infty_0}{\infty_0}=1$, while one gets $\frac21=2$ using the definition of limits. Nov22 accepted Complexity of sorting algorthms Nov22 asked Complexity of sorting algorthms Nov22 answered Solve $f(f(n))=n!$ Nov13 comment How to convert $\sqrt{\frac{5}{3}}$ to $\frac{\sqrt{15}}{3}$? @Max ${5\over3}\to{15\over9}$ Nov13 comment How to convert $\sqrt{\frac{5}{3}}$ to $\frac{\sqrt{15}}{3}$? BTw, you can use LaTeX makeup by starting with an \$and ending with another \$, for instance $\sqrt{\frac{5}{3}}$ becomes $\sqrt{\frac{5}{3}}$. Nov13 answered How to convert $\sqrt{\frac{5}{3}}$ to $\frac{\sqrt{15}}{3}$? Nov11 accepted A lemma of convergence Nov11 comment A lemma of convergence @André: yes. We already proved that.