170 reputation
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location
age 21
visits member for 3 years
seen May 25 '13 at 22:48

Just someone who loves maths.


May
21
asked Problems about symmetric groups
Jul
13
comment Locus and concurrent lines
Now I understand, I completely ignored the rectangle thing that I just continued squaring until getting a hyperbola-like equation ( which in fact is not, I reverified this morning ). Thank you both user6312 and Jyrki Lahtonen !
Jul
12
awarded  Scholar
Jul
12
accepted Locus and concurrent lines
Jul
12
comment Locus and concurrent lines
Thank you for the hint ! Unless I'm mistaken, if the lines aren't orthogonal we get a conic section ( an hyperbola to be precise ).
Jul
12
awarded  Student
Jul
12
asked Locus and concurrent lines
Jul
11
comment Proof that $\sum\limits_{k=1}^nk^2 = \frac{n(n+1)(2n+1)}{6}$?
I waited in order to gain the commenting privilege just to say this : You made me fall in love with calculus again !!
Jul
10
comment Trigonometry: Solve $(1-\cos\alpha)^2 + \sin^2\alpha = d^2$ for $\alpha$
Guess I was nearly one minute late ^_^
Jul
10
answered Trigonometry: Solve $(1-\cos\alpha)^2 + \sin^2\alpha = d^2$ for $\alpha$
Jul
10
comment How should I approach taking math tests?
@Américo Tavares : yes, it might be good too, only if you can sort out exercises in order to skip those who need notions that you still haven't revised. Finally, of course it depends on each one's way of doing things :-)
Jul
10
comment How should I approach taking math tests?
@Américo Tavares : because I don't think it's a good idea if you don't fully understand your course. It reminds me of someone who tried to evaluate the integral $\int x \ln x$ without taking the time to first revise the "Integration by parts" section of his course.
Jul
10
answered How should I approach taking math tests?
Jul
10
awarded  Supporter
Jul
10
answered Proof that $\sum\limits_{k=1}^nk^2 = \frac{n(n+1)(2n+1)}{6}$?
Jul
9
revised Prove that minimum of $\lambda \sin \theta + (1 - \lambda) \cos \theta \le -\dfrac{1}{\sqrt 2}$
corrected a little mistake
Jul
9
suggested suggested edit on Prove that minimum of $\lambda \sin \theta + (1 - \lambda) \cos \theta \le -\dfrac{1}{\sqrt 2}$
Jul
8
answered find minimum positive angle between two line
Jul
8
revised Proof by induction that $2^n \gt n^k$
another typo ( sorry I'm perfectionist :D ) : replaced [2;infinity] with [2;infinity[
Jul
7
revised Proof by induction that $2^n \gt n^k$
added 23 characters in body