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I'm doing my PhD in Computational Mathematics, Linear Algebra and Visualisation in Australia. Basically, I spend a lot of my day trying to find out what space I am in.


Oct
10
answered How do I find the normal equation for a plane in 4 dimensions
Oct
8
reviewed Leave Open Set of zeros of derivate - Lebesgue measure
Oct
8
reviewed Close How to solve a linear stochastic differential equation?
Oct
8
reviewed Leave Open Actually playable games based on graphs?
Oct
8
reviewed Close Consequences of irrationality of e
Oct
8
reviewed Leave Open Null of linear map, range of linear map in polynomial
Oct
8
reviewed Leave Closed How do I compute the determinant of (AA^T) where A is a not square
Oct
6
answered I need to find the smallest lambda for which $P(X\ge 2)=0.99$ when $X\sim \text{Poisson}(λ)$
Oct
6
answered Approximation of $T10$ for integral $\int_0^1\sin(x^2) dx$ Trapezoid Approximation
Sep
30
awarded  Explainer
Sep
24
awarded  Autobiographer
Sep
18
reviewed Approve suggested edit on Initial Value Differential Equation
Sep
6
comment A quick clarification about elementary row operations?
@almagest I didn't say the third item did change the determinant. In a technical sense, it scales by a factor of $1$, which results in no change to the value of the determinant.
Sep
6
comment A quick clarification about elementary row operations?
@almagest Swapping rows also changes the value of the determinant (makes it negative), which would make the first two fall under this criterion(?). As it is known how the value of the determinant changes under these three elementary row operations, I don't see how this would make the second non-elementary.
Sep
6
comment A quick clarification about elementary row operations?
@Ayoshna Yes, because Gaussian elimination uses row operations. Generally, I find my students make less mistakes when they do one row operation at a time than combining two at once.
Sep
6
answered A quick clarification about elementary row operations?
Sep
6
answered Solve $\lim_{x\to 0} \frac{\sin 2x}{4x}$
Jul
18
awarded  Yearling
Jun
14
reviewed Approve suggested edit on How could I find the partial sum of this function?
Jun
14
reviewed Leave Open For which $n$ is $ \int_0^{\pi/2} \frac{\mathrm{d}x}{2+\sin nx}= \int_0^{\pi/2} \frac{\mathrm{d}x}{2+\sin x}=\frac{\pi}{3\sqrt{3\,}\,}$?