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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 $f(f^{-1}(D)) \subset D$
Mar
21
accepted Is this relation symmetric on $\mathbb{Z} \times ( \mathbb{Z} \backslash \{0\}) $
Mar
21
comment Is this relation symmetric on $\mathbb{Z} \times ( \mathbb{Z} \backslash \{0\}) $
Thanks for clarifying my mistake.
Mar
21
asked Is this relation symmetric on $\mathbb{Z} \times ( \mathbb{Z} \backslash \{0\}) $
Mar
17
accepted List the elements in the equivalence class $E_{(9,2)}$
Mar
17
revised List the elements in the equivalence class $E_{(9,2)}$
deleted 50 characters in body
Mar
17
revised List the elements in the equivalence class $E_{(9,2)}$
added 60 characters in body; edited title
Mar
17
asked List the elements in the equivalence class $E_{(9,2)}$
Mar
14
accepted Counter example for $(A \times B) \cap (C \times D) = (A \cap C ) \times (B \cap D)$
Mar
14
asked Counter example for $(A \times B) \cap (C \times D) = (A \cap C ) \times (B \cap D)$
Mar
13
comment How to prove that $\{a\} \times \{a\} = \{\{\{a\}\}\}$
Heck, I forgot to add the set symbol around the ordered pairs.