Danny Birch
Reputation
Next privilege 250 Rep.
 Sep 24 awarded Autobiographer May 3 comment Integral with goniometric functions $\int(1+\cos^2x-\sin^2x)dx$ Your mistake is that âˆ«sin^2 is not -cos^2. Hamid's answer points out the solution which uses integration by parts. May 3 awarded Commentator May 3 comment How to quickly find if point lies between 2 non-intersecting segments? Can I ask what the purpose of reducing the number of tests here? Just to get some context. Aug 16 comment Should I put number combinations like 1111111 onto my lottery ticket? I would never pick 1111111 when usually in a lottery all the balls are labelled with unique numbers Aug 8 comment Find the point on graph of $xy=12$ that is closest to the point $(5,0)$ Remember you're looking for $2(x^4-5x^3-144)/x^3 = 0$... Aug 8 comment A troublesome logic puzzle. The word "knows" lost all meaning for me after reading that assumption part. Aug 8 awarded Critic Jul 13 comment inscribed triangle with circle Clean and simple Jun 25 revised Prove that $d^n(x^n)/dx^n = n!$ by induction deleted 29 characters in body Jun 25 revised Prove that $d^n(x^n)/dx^n = n!$ by induction added 27 characters in body Jun 25 revised Prove that $d^n(x^n)/dx^n = n!$ by induction added 16 characters in body Jun 25 answered Prove that $d^n(x^n)/dx^n = n!$ by induction Jun 24 awarded Organizer Jun 24 revised How can I add a curve to my otherwise linear values? More appropriate tags :) Jun 24 suggested approved edit on How can I add a curve to my otherwise linear values? Jun 24 answered How can I add a curve to my otherwise linear values? Jan 6 comment When does $\frac{x^2}{2} - \frac{x}{2} = x\log x$? @HagenvonEitzen Ah yes, it seems that is the ISO standard. Thanks for the edit :) Jan 6 comment When does $\frac{x^2}{2} - \frac{x}{2} = x\log x$? What do you use as the initial number in the recursive formula? I can't seem to find a proper solution for base 2 Jan 6 awarded Supporter