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Jul
19
reviewed Reviewed “Long-division puzzles” can help middle-grade-level students become actual problem solvers, but what should solution look like?
Jul
19
reviewed Reviewed Constructing an orthogonal basis with a choice of inner product
Jul
3
reviewed Reviewed How long will it take two clocks to show the same time once again?
Jun
27
reviewed Reviewed What does $\Bbb R/2\pi$ for a set mean?
Jun
27
comment What does $\Bbb R/2\pi$ for a set mean?
it would be useful to provide a link to the article!
Jun
27
reviewed Reviewed Why is $x^{100} = 1 \mod 1000$ if $x < 1000$ and $\gcd (x,1000) = 1$?
Jun
23
reviewed No Action Needed Every combination of $v = (1, -2, 1)$ and $w = (0, 1, -1)$ has components that add to ________.
Jun
23
revised How can I check if a function is always $\ge 0$ for all values of its parameter $\ge 0$?
fixed grammar
Jun
21
reviewed No Action Needed What is $\lim_{n \to \infty} n^3 a_n$?
Jun
16
reviewed No Action Needed Simplifying $\sum_{i=1}^n {1\over i(i+1)}$ to ${n\over n+1}$
Jun
15
comment How can I prove $n - 2\sqrt{n} = \Theta(n)$
you should define these things because as far as I know, only $O$ is standard notation.
Jun
15
reviewed Reviewed How can I prove $n - 2\sqrt{n} = \Theta(n)$
Jun
15
comment How can I prove $n - 2\sqrt{n} = \Theta(n)$
Whats the difference between $\Theta$ and $O$, and $\Omega$?
Jun
15
answered How can I check if a function is always $\ge 0$ for all values of its parameter $\ge 0$?
Jun
15
reviewed No Action Needed How can I check if a function is always $\ge 0$ for all values of its parameter $\ge 0$?
Jun
15
reviewed No Action Needed Expected waiting time with $m$ tellers and $n$ customers at a bank
Jun
15
reviewed Reviewed Hadamard matrices and sub-matrices (Converse of Sylvester Construction)
Jun
15
reviewed No Action Needed Find the values of b for which the line $y=3x+b$ intersects the circle $x^{2}+y^{2}=4$
Jun
14
reviewed Reviewed Probability of picking something (3/10) given three chances?
Jun
14
comment “eigenfunction” of a transformation
hear heat, potato, potahto