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May
1
comment Find the largest size of squares that can pave a given rectangle
Correct answer, you may want to accept this
May
1
revised Finite commutative ring with more than $\frac{2}{3}$ of its elements idempotent
added 27 characters in body
May
1
answered Finite commutative ring with more than $\frac{2}{3}$ of its elements idempotent
May
1
revised Factor a polynomial
added 35 characters in body
May
1
comment Finding the sum of real solutions to an equation
The sum of all solutions is $-\frac{80}{32}$, but do we know that none of them are complex?
May
1
comment Shortest possible way to go from one corner of the city to opposite corner if a city has $n,m$ parallel roads from east - west & north -south?
Also, equidistance is not needed, the roads should just be "parallel enough"
May
1
revised Shortest possible way to go from one corner of the city to opposite corner if a city has $n,m$ parallel roads from east - west & north -south?
added 7 characters in body; edited title
May
1
answered Shortest possible way to go from one corner of the city to opposite corner if a city has $n,m$ parallel roads from east - west & north -south?
May
1
answered Is $\frac{1}{x}$ on [0,$\infty$] continuous at zero?
May
1
comment When is it sufficient to use logic as proof for an intuitive answer
@JordanGlen Ack
May
1
revised When is it sufficient to use logic as proof for an intuitive answer
edited body
May
1
comment Analytical solution for $\max{x_1}$ in $(x_n)_{n\in\mathbb{N}}$
Starting greedily from $x_9= 36$ and letting $x_k=k\lfloor \frac{x_{k+1}+4}{k}\rfloor$, we get $x_8=40$, $x_7= 42$, $x_6= 42$, $x_5= 45$, $x_4=48$, $x_3= 51$, $x_2= 54$, $x_1= 58$. Per greediness, this is the maximum possible $x_1$
May
1
answered When is it sufficient to use logic as proof for an intuitive answer
May
1
awarded  polynomials
May
1
comment Under what conditions is $ \max_{a \in A} (f(a) - g(a)) \geq \max_{a \in A} f(a) - \max_{a \in A} g(a) $ true?
@Pinocchio Well the maximum should exist in the first place (or you use the supremum instead, for which almost the same proof works)
May
1
answered Factor a polynomial
May
1
revised Compute the largest root of $x^4-x^3-5x^2+2x+6$
added 34 characters in body
May
1
answered Compute the largest root of $x^4-x^3-5x^2+2x+6$
May
1
answered What is meant by eigen spaces are non-orthogonal?
May
1
answered Understanding proof that sequence $x_n =( -1)^{n}$ is not convergent