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 Feb2 awarded Yearling Jan14 comment Is there a name/notation for coordinate-wise identical function? @Travis Good point. I'll move the question there if I don't get reasonable answers here. Also, perhaps other tags could be more appropriate? Jan14 asked Is there a name/notation for coordinate-wise identical function? Jan7 answered Two different results for splitting sample points into groups of a certain size? Nov5 awarded Popular Question Oct29 comment Find the derivative of $y = x^{\ln(x)}\sec(x)^{3x}$ Show some of your work. Where are you getting stuck?\ Sep26 comment Would Evaluating a polynomial at uniformly random points outputs random values? A polynomial exists over the entire real line. Is your uniform distribution bounded? Sep24 awarded Autobiographer Sep23 comment Find the largest $\delta \gt 0$ such that $|{\sqrt{x - x^2} - 0}| \lt\epsilon$ when $1 - \delta \lt x \lt 1$. Are we assuming that $f: \mathbb{R} \rightarrow \mathbb{R}$? Sep15 comment Proof of Laplace expansion using minors Just curious, which book is this proof from? Sep15 answered $\vec{a} \times \vec{b} = \vec{c} \times \vec{d}$ . what can you say about the direction of $\vec{b} \times \vec{c}$? Sep5 comment Finding inverse of a general linear transform @MattL. Good find. I think this is essentially a dupe then. Should I close it? Sep5 asked Finding inverse of a general linear transform Sep3 awarded Nice Question Aug5 revised Linear Independence of Secant-squared or tangent-squared Edited mathjax Aug5 suggested approved edit on Linear Independence of Secant-squared or tangent-squared Jul31 accepted Why generalize the derivative for multivariable functions? Jul30 asked Why generalize the derivative for multivariable functions? Jul24 comment How to further simplify this equation? A diagonal matrix is square by definition. What do you mean by $\Sigma$ is a diagonal $m \times n$ matrix? Jul9 comment Series for reciprocal of polylogarithm? This is a very elegant approach, and very simple. Thank you!