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Oct
27
answered Intuition behind a certain limit.
Oct
27
revised Show $(a_n)_{n=m}^{\infty}$ converges to $c$ iff $(a_n)_{n=m'}^{\infty}$ does.
missing part of statement
Oct
27
answered Show $(a_n)_{n=m}^{\infty}$ converges to $c$ iff $(a_n)_{n=m'}^{\infty}$ does.
Oct
27
comment Prove no member of $S = \left\{x \mid x \in \mathbb{Q^+}, x^2 < 2 \right\}$ can be an upper bound for $S$
Suppose that $r\in S$ is an upper bound. You have proven that there exists $r'>r$, $r'\in S$. So $r$ is not an upper bound.
Oct
27
answered Finding maximum area of rectangle with constraint
Oct
27
comment Finding maximum area of rectangle with constraint
$x$ and $y$ are length and width.
Oct
27
answered Prove no member of $S = \left\{x \mid x \in \mathbb{Q^+}, x^2 < 2 \right\}$ can be an upper bound for $S$
Oct
23
comment Find absolute maximum and minimum with domain
@MartinSleziak sorry it was a typo. No tagging intended.
Oct
22
revised Determinant value of $2 \times 2$ matrices
added 78 characters in body
Oct
22
revised Determinant value of $2 \times 2$ matrices
added 78 characters in body
Oct
22
revised Determinant value of $2 \times 2$ matrices
added 10 characters in body
Oct
22
answered Determinant value of $2 \times 2$ matrices
Oct
22
comment There are 10 sticks of length 1,..,10. How many triangles can be formed
Can triangles overlap each other? Do the intersections of sticks count as vertices?
Oct
22
comment There are 10 sticks of length 1,..,10. How many triangles can be formed
I cannot get more than 4, and for 4 only 9 sticks are enough.
Oct
22
revised Dividing by 2 numbers at once, what is the answer?
added 4 characters in body
Oct
22
revised Dividing by 2 numbers at once, what is the answer?
added 246 characters in body
Oct
22
revised Dividing by 2 numbers at once, what is the answer?
added 246 characters in body
Oct
22
revised Dividing by 2 numbers at once, what is the answer?
added 246 characters in body
Oct
22
answered Dividing by 2 numbers at once, what is the answer?
Oct
22
comment Dividing by 2 numbers at once, what is the answer?
While sums and moltiplications associate on the left, it is a good convention that powers associate to the right: A^B^C = A^(B^C). This because $(A^B)^C$ can be written anyway without parenthesis as $A^{BC}$. Python (and maybe other programming languages) agrees with this convention.