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Michael Hardy

Minneapolis, MN

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Top Questions
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76
Are non-circular manholes possible?
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72
What does $2^x$ really mean when $x$ is not an integer?
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64
Are there real-life relations which are symmetric and reflexive but not transitive?
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27
Prove: $\binom{n}{k}^{-1}=(n+1)\int_{0}^{1}x^{k}(1-x)^{n-k}dx$ for $0 \leq k \leq n$
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25
Is it possible for a quadratic equation to have one rational root and one irrational root?
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23
Proving Irrationality
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22
What is $dx$ in integration?
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21
What remains in student's mind
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20
How to simplify a square root
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20
Prove by mathematical induction that $1 + 1/4 +\ldots + 1/4^n \to 4/3$
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19
Why do we use a Least Squares fit?
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19
Don't throw away all votes when a user is deleted
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18
Is there a sequence in $(0,1)$ such that the product of all its terms is $\frac{1}{2}$?
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13
Complex math problem that is easy to solve
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13
prove for all $n\geq 0$ that $3 | n^3+6n^2+11n+6$
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12
What's wrong with me?
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12
Infinite series expansion of $\sin (x)$
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12
Are sin and cos the only continuous and infinitely differentiable periodic functions we have?
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12
What is the integral of $x(1-x)^8$?
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12
Is there a uniform distribution over the real line?
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12
why is ${n+1\choose k} = {n\choose k} + {n\choose k-1}$?
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12
What is the purpose of Stirling's approximation to a factorial?
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12
Is the set of all valid C++ programs countably infinite?
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11
Choosing points in fractions of the unit interval
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11
Do real matrices always have real eigenvalues?
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11
What's the difference between Rao-Blackwell Theorem and Lehmann-Scheffé Theorem?
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11
Proof: If $f'=0$ then is $f$ is constant
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11
Show that $\tan 3x =\frac{ \sin x + \sin 3x+ \sin 5x }{\cos x + \cos 3x + \cos 5x}$
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11
Use of “without loss of generality”
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11
How to calculate π
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