vf321
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Questions Asked

vf321:
Group Title
What is a priori error? Could you give an example?
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

vf321:
Group Title
For a given triangle ABC, where \(h_X\) stands for altitude from a vertex \(X\), is \(h_b+h_c>b\) for all \(b\)?
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

vf321:
Group Title
Can the sum of any two altitudes of a triangle be smaller than one of its legs?
 updated one year ago
 5 replies
 1 Medal
Mathematics

vf321:
Group Title
Does anyone know how to approach secondorder negative feedback systems? Could you give an example please?
 updated one year ago
 3 replies
 No Medals Yet
Mathematics

vf321:
Group Title
(DE) Can you construct a secondorder negative feedback loop example?
 updated one year ago
 12 replies
 No Medals Yet
Mathematics

vf321:
Group Title
Is space curvature relative to the frame of reference? If I have an object that is of some length \(l\) moving at a relativistic velocity …
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

vf321:
Group Title
Is \((AB)^{1}=A^{1}B^{1}\) for square matrices A and B?
 updated 2 years ago
 7 replies
 2 Medals
Mathematics

vf321:
Group Title
Why is \(\Delta q = \lambda\)? Let's say I'm measuring an electron's position with light. I agree that \(\Delta p = h/\lambda\), where \(\…
 updated 2 years ago
 1 reply
 2 Medals
Mathematics

vf321:
Group Title
Define the region \(\Sigma\subset\mathbb{R^2}\) as a system of inequalities for \((x, y)\). \(\Sigma\) is the intersection between the two r…
 updated 2 years ago
 30 replies
 No Medals Yet
Mathematics

vf321:
Group Title
Can I simplify \(\arcsin(c_1\sin\Phi)\)?
 updated 2 years ago
 1 reply
 No Medals Yet
Mathematics

vf321:
Group Title
I was working on an MVC problem but forgot my trig: \(\sin(\pix) = ?\). It's like negative cosine or something, right?
 updated 2 years ago
 7 replies
 1 Medal
Mathematics

vf321:
Group Title
Is information (in classical physics) transferred at light speed? Or is it assumed to be instantaneous? What is actually going on in exampl…
 updated 2 years ago
 30 replies
 1 Medal
Mathematics

vf321:
Group Title
Is the vector cross product only defined for 3D? Wikipedia formally introduces it as, for vectors \(\vec a\) and \(\vec b\),\[\vec a\times …
 updated 2 years ago
 15 replies
 2 Medals
Mathematics

vf321:
Group Title
How do I make inline Latex code in OpenStudy?
 updated 2 years ago
 8 replies
 2 Medals
Mathematics

vf321:
Group Title
Is the following DE solvable?
For constants m1, m2, and G, find the position vectors r1 and r2 as functions of time. We know:
\[m_1\frac{…
 updated 2 years ago
 4 replies
 No Medals Yet
Mathematics

vf321:
Group Title
Can a realvalued function f(x, k) which has domain x: Reals and k: Positive integers and 0 have the following property?\[\lim_{n\rightarrow…
 updated 2 years ago
 7 replies
 1 Medal
Mathematics

vf321:
Group Title
Why does 11/3+1/51/7... converge to Pi/4? In Latex,
\[\sum_{k=0}^{\infty}\frac{(1)^k}{2k+1}=\frac{\pi}{4}\]
Don't give me a copy/paste o…
 updated 2 years ago
 17 replies
 5 Medals
Mathematics

vf321:
Group Title
With the initial conditions for a two mass system m1 and m2, where neither mass is significantly larger than the other, the resulting DE is …
 updated 2 years ago
 35 replies
 1 Medal
Mathematics

vf321:
Group Title
Hello, I have a "graphical" problem. Let's say you have two points, 1 and 2, with some initial position. Let's make the initial position v…
 updated 2 years ago
 35 replies
 No Medals Yet
Mathematics