TheJoker
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 Nov11 answered Good examples for mathemathical problems/statements that are easely solvable/provable in one theory and hard to solve/prove in another Nov11 revised How can I use residue theory to verify this integral formula? edited tags Nov11 answered Choosing the better of two estimators Nov9 comment Normal Approximation to find probability of stopping at a red light at least 15 times if you are happy with the answer, you can accept it... Nov9 revised Normal Approximation to find probability of stopping at a red light at least 15 times added 328 characters in body, adrrectionded concept of conyinuity co Nov9 comment Normal Approximation to find probability of stopping at a red light at least 15 times ok, i'll edit my answer. Nov9 answered Normal Approximation to find probability of stopping at a red light at least 15 times Nov9 comment Prove this function is onto and one-to-one Hi, welcome here.Are you sure your function is $\mathbb R \to \mathbb R$ ? As putting $x= -\frac 12$ contradicts this?? Nov4 comment How can I make estimates on large powers and logarithms such as $e^{10}$? your question is unclear IMO. How do you estimate?? One way would be to find power series expansion( exists for exp as well as log) and calculating to whatever accuracy you desire... Nov2 revised Connectedness of the boundary edited tags Oct13 awarded Organizer Oct13 revised Triangle problem edited tags Oct13 revised An example of the maximum of $f(x)$ and the maximum of $g(x)$ does not to equal to the maximum of $(f+g)(x)$ clarified a question in comments Oct13 answered An example of the maximum of $f(x)$ and the maximum of $g(x)$ does not to equal to the maximum of $(f+g)(x)$ Oct13 comment Solution simple ODE Welcome to math,SE. What do you find difficult in the question?? Have you tries separating the variables?? Oct13 revised Let $m \in \mathbb Z, m>1$, then $\cos(2 \pi/m) \in \mathbb Q$ if and only if $m \in \{1,2,3,4,6\}$. corrected some errors,improved formatting Oct13 revised Let $m \in \mathbb Z, m>1$, then $\cos(2 \pi/m) \in \mathbb Q$ if and only if $m \in \{1,2,3,4,6\}$. corrected some errors Oct13 comment Probability mass function and conditional probabilities Thanks.You have keen sense of observation. Oct13 answered Let $m \in \mathbb Z, m>1$, then $\cos(2 \pi/m) \in \mathbb Q$ if and only if $m \in \{1,2,3,4,6\}$. Oct13 answered number of integral solutions for $x^2+y^2=5^k$