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Aug
19
awarded  Popular Question
Aug
4
awarded  Critic
Jul
26
accepted Analyzing logical form of the statements
Jul
26
asked Analyzing logical form of the statements
Jul
26
asked Logical form of the statements
Jul
26
awarded  Organizer
Jul
26
revised How to integrate $\int \frac{e^x \cos x}{\tan x+\operatorname{sec}x}dx$?
It is an indefinite integral
Jul
26
suggested approved edit on How to integrate $\int \frac{e^x \cos x}{\tan x+\operatorname{sec}x}dx$?
Jun
16
awarded  Popular Question
Jun
6
comment De Jong's Fifth Function's Minimum?
Here is a Matlab/R implementation of Dejong's fifth function sfu.ca/~ssurjano/dejong5.html
Apr
29
awarded  Popular Question
Apr
21
accepted Negation of “Diane rode her bicycle 100 miles on Sunday”
Apr
18
asked Negation of “Diane rode her bicycle 100 miles on Sunday”
Mar
29
comment Integral of $\big((1+\cos(x))\sin(x)\big)^2$
Hint: $sin^{2}(x) = 1/2(1 - cos2x),cos^{2}(x) = 1/2(1 + cos2x)$
Mar
29
comment How would I prove that the limit of $f(x) = 1/(x^2 - 1) = - 1$ as $x \to 0$ using the $\epsilon-\delta$ definition?
Can you explain why f(x) in the title is different form the f(x) given in the text?
Mar
29
comment Integral of $\big((1+\cos(x))\sin(x)\big)^2$
What did you try?
Mar
25
awarded  Yearling
Mar
23
accepted Does the equation $x^{3} - x - p = 0$ always has a solution in $\mathbb{R}$
Mar
22
asked Does the equation $x^{3} - x - p = 0$ always has a solution in $\mathbb{R}$
Mar
22
asked Proving $f(f^{-1}(D)) \subset D$