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2d
revised Prove that $1^2 + 2^2 + … + (n-1)^2 < \frac {n^3} { 3} < 1^2 + 2^2 + … + n^2$
added 66 characters in body
2d
revised Prove that $1^2 + 2^2 + … + (n-1)^2 < \frac {n^3} { 3} < 1^2 + 2^2 + … + n^2$
edited tags
2d
revised Does $X ⊥ Y \leftrightarrow X ⊥ Y | Z$ implies $(X,Y) ⊥ Z$?
edited title
Aug
29
revised Integral $\int \frac{\mathrm{d}x}{\sqrt{x}+\sqrt{x+1}+\sqrt{x+2}}$
edited title
Aug
29
revised Calculating $\iint_{D} \left(x-y\right)dxdy$ where $D=\left\{0\le x-y\le 1,\:1\le xy\le 2\right\}$
edited title
Aug
13
revised Different methods to compute $\sum\limits_{k=1}^\infty \frac{1}{k^2}$
k is the usual index for summation, n is used for the upper limit of summation.
Aug
11
revised What is intresting about $\sqrt{\log_x{\exp{\sqrt{\log_x{\exp{\sqrt{\log_x{\exp{\cdots}}}}}}}}}=\log_x{e}$?
added 2 characters in body; edited title
Aug
4
revised Is $\sum\limits_{{\rm{i}} = 1}^{n - k} {{b_i}} \times {b_{n-2}} + b_{k}$ correct to express this pattern in base n?
added 18 characters in body
Aug
4
revised Is $\sum\limits_{{\rm{i}} = 1}^{n - k} {{b_i}} \times {b_{n-2}} + b_{k}$ correct to express this pattern in base n?
added 6 characters in body
Aug
4
revised Is $\sum\limits_{{\rm{i}} = 1}^{n - k} {{b_i}} \times {b_{n-2}} + b_{k}$ correct to express this pattern in base n?
edited body; edited title
Aug
4
revised Is $\sum\limits_{{\rm{i}} = 1}^{n - k} {{b_i}} \times {b_{n-2}} + b_{k}$ correct to express this pattern in base n?
deleted 4 characters in body
Aug
4
revised Is $\sum\limits_{{\rm{i}} = 1}^{n - k} {{b_i}} \times {b_{n-2}} + b_{k}$ correct to express this pattern in base n?
added 12 characters in body; edited title
Jul
3
revised Integral of rational function with a squared term in the denominator
added 1 character in body; edited title
May
31
revised proof of $-\ln\left(2\sin\left(\frac x2\right)\right)=\sum_{k=1}^\infty \frac {\cos(kx)}{k}$?
edited title
May
25
revised Can Zorn's Lemma be 'inverted' like this:?
edited title
Apr
20
revised A trigonometric proof of an inequality
inequation is a concept that is not been invented yet at the early part of 21st century
Apr
19
revised Limit $\lim_{x→0} x^{x^x}$
edited title
Mar
20
revised Integral $\int_0^1\sqrt[2\,n\,]{\frac x{1-x}}\,\mathrm dx$
edited title
Mar
18
revised Calculus Proving
extreeme usage of $, trim the $ man!
Mar
17
revised Integral $\int \frac{x^2}{\sqrt[] {3-x^3} } \operatorname d \! x$
added 16 characters in body; edited title