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Mathematics
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The Pointer

Apparently, this user prefers to keep an air of mystery about them.

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  • Member for 2 years, 9 months
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  • Last seen 9 hours ago

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Top Posts (493) All Questions Answers | Votes Newest

9 Why/How does the determinant of the Hessian matrix, combined with the 2nd derivatives, tell us max., min., saddle points? Reasoning behind it? Oct 26 '16
8 Consistency of ZFC and proof by contradiction Feb 9 '17
8 Determining Whether the Number $11111$ is Prime. Used Divisibility Tests. Aug 23 '18
7 Proof: For any integer $n$ with $n \ge 1$, the number of permutations of a set with $n$ elements is $n!$. Dec 28 '18
6 For the statement A implies B, write the statement NOT B implies NOT A. Feb 7 '17
6 Trouble in Checking PDE Boundary Solution Problem Aug 18 '18
6 Help Solving Textbook Heat Conduction Laplace Transforms PDE Problem Aug 28 '18
6 Find the adjoint under the inner product $\langle f, g \rangle = \int_0^1 f(t)g(t)t \ dt$ of $\mathcal{L}(f)(t) = \frac{d^2 f}{dt^2} + f$. Oct 30 '17
5 The set of $n \times n$ matrices having trace equal to zero is a subspace of $M_{n \times n} \left(F\right)$ Jan 29 '17
5 Area of a surface using integration. Confusion with aspect of formal definition. Apr 17 '17
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