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Jan
28
revised Why does the sum of two linearly independent solutions of a second order homogeneous ODE give a general solution?
corrected the statement about non-vanishing of the Wronskian
Jan
27
comment Why does the sum of two linearly independent solutions of a second order homogeneous ODE give a general solution?
we are concerned here with linear independence of $y_1$, $y_2$, not $A$ and $B$. It does not make sense to speak about the linear dependence of constants
Jan
27
answered Why does the sum of two linearly independent solutions of a second order homogeneous ODE give a general solution?
Jan
4
answered Difficult Integral
Oct
21
reviewed Approve Is $HK$ abelian?
Oct
21
comment Olympiad inequality problem with $a+b+c+abc=4$
I think you are right.. It did seem too easy anyway
Oct
19
answered Olympiad inequality problem with $a+b+c+abc=4$
Jul
28
answered Find a polynomial from an equality
Jul
27
comment Find a polynomial from an equality
related math.stackexchange.com/questions/3888/…
May
21
awarded  Yearling
Aug
5
awarded  Necromancer
Jul
29
reviewed Approve Represent a prime number $p$ congruent to $1$ $\pmod{3}$ by a sum of a square and $3$ times a square
Jul
17
awarded  Enlightened
Jul
17
awarded  Nice Answer
Jun
8
reviewed Approve Why does $1-\sqrt{1-4pq} = 1-|p-q |$ for $p \in (0,1)$ and $q=1-p$?
Jun
2
answered Why a subspace of a vector space is useful
May
21
awarded  Yearling
Mar
10
awarded  Nice Answer
Feb
2
reviewed Approve Packing circles on a line
Jan
18
comment Equilateral triangle geometric problem
thanks, corrected