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r~~‭

Profile Activity Vote Summary

A quiet enigma. We don't know anything about r~~‭ yet.

Posts

80%

+6 −0

Q&A Why should a non-commutative operation even be called "multiplication"?

posted 9mo ago by r~~‭

Answer

77%

+5 −0

Q&A Why always rationalize a denominator?

posted 10mo ago by r~~‭ · edited 10mo ago by r~~‭

Answer

75%

+4 −0

Q&A Getting backward of partial differentiation's chain rule

posted 2mo ago by r~~‭

Answer

71%

+3 −0

Q&A Product of empty set of elements vs. product over empty indexing set — is there any difference?

posted 10mo ago by r~~‭

Answer

71%

+3 −0

Q&A Given a triangle with squares on two sides, the line segments joining the centres of the squares to the midpoint of the third side are equal and perpendicular

posted 10mo ago by r~~‭

Answer

71%

+3 −0

Meta Questions with a quote/screenshot and a request to explain

posted 4mo ago by r~~‭

Answer

66%

+2 −0

Q&A How can I visualize this Compound Interest Chart with indefinite integrals?

posted 8mo ago by r~~‭

Answer

66%

+2 −0

Q&A A formal-logic formula for decimal to binary conversion

posted 4mo ago by r~~‭ · edited 4mo ago by r~~‭

Answer

66%

+2 −0

Q&A What're the orders for equation expressing?

posted 2mo ago by r~~‭ · edited 2mo ago by r~~‭

Answer

66%

+2 −0

Q&A Is Pythagorean theorem really valid in higher dimensional space?

posted 1mo ago by r~~‭ · edited 1mo ago by r~~‭

Answer

66%

+2 −0

Q&A transpose matrix and general matrix is completely messed up

posted 17d ago by r~~‭ · edited 16d ago by r~~‭

Answer

60%

+1 −0

Q&A difference between quotient rule and product rule

posted 6mo ago by r~~‭

Answer

60%

+1 −0

Q&A Why $\color{red}{k\dbinom{k}{1}} \neq$ "first choose the k team members and then choose one of time to be captain"?

posted 4mo ago by r~~‭

Answer

60%

+1 −0

Q&A How does the change of variable $\color{red}{r↦n−r}$ transmogrify $\sum\limits_{r=0}^n2^{n-r}\binom{n+r}{n}=2^{2n}$ into $\sum\limits_{k=0}^{n} \frac{\binom{2n-k}{n}}{2^{2n-k}}=1$?

posted 4mo ago by r~~‭

Answer

60%

+1 −0

Q&A How does $\lim\limits_{n \to \infty} \dfrac{p[s + (1 - s)c^n]}{p[ s + (1 - s)c^n] + (1 - p)[s + (1 - s)w^n]} = p?$

posted 3mo ago by r~~‭

Answer

Reputation		423
Number of top-level posts		1
Number of answers		25
Sum of received votes (up minus down)		38
Number of edits made		19

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Posts
Count		26
Questions		1
Answers		25
Articles		0

Votes cast
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Flags raised
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