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Dec
15
reviewed Leave Open Find all functions: $\left ( \int \frac{dx}{f(x)} \right )\left ( \int f(x)dx \right )=c$
Dec
15
revised Find a polynomial of degree $8$ with integer coefficients with given root
deleted 1 character in body
Dec
15
revised When does the Putnam release solutions to this year's exam? Has anyone released their own solutions?
edited tags
Dec
14
reviewed Looks OK Probability: Minimum Questions
Dec
14
reviewed Close Equation of a function after rotation of the plane
Dec
14
reviewed Close Rotation of curves
Dec
13
reviewed Close Polynomial Interpolant
Dec
13
reviewed Leave Open Find $\int\sin^4(x)\cos^2(x)\,dx$
Dec
13
reviewed Close how many solution can be found of the form $A \pmod{X} = B$
Dec
13
reviewed Leave Open Find value of sum of reciprocals of powers of a number
Dec
13
reviewed Leave Open what is the cardinality of a Null set?
Dec
13
comment Trisecting an angle
@Derek朕會功夫: When people say that trisecting an angle is impossible, they're talking about doing it exactly. It's always possible to come up with approximate trisections that only use straightedge and compass, that come as close as you like to being a genuine trisection...
Dec
13
reviewed Close How Can One Legitimately Use the Rules of Substitution and Repalcement in a Non-Mechanical Fashion?
Dec
13
reviewed Reopen Finding all groups with this property. (Elementary Algebra)
Dec
13
reviewed Close The number of nonnegative integer triples with sum equal to $12$
Dec
12
reviewed Reopen Evaluate $\int_0^{\pi/2}x\cot{(x)}\ln^4\cot\frac{x}{2}\,\mathrm dx$
Dec
12
reviewed Approve If $f$ is continuous on $[a,b)$ and $[b,c]$, then $f$ is Riemann integrable on $[a,c]$.
Dec
12
reviewed Leave Open XOR function over binary vectors
Dec
12
reviewed Close What is the name of this letter?
Dec
12
reviewed Close Function $\mathbb{R}\to\mathbb{R}$ that is continuous and bounded, but not uniformly continuous