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coincident

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coincident
coincident, a. (and n.) (kəʊˈɪnsɪdənt) [a. F. coïncident, ad. med.L. *coincident-em, pres. pple. of coincidĕre to coincide.] A. adj. 1. Occupying the same place or portion of space.1656 tr. Hobbes' Elem. Philos. (1839) 102 Coincident and coextended with it. 1660 Barrow Euclid i. viii, So the sides o... Oxford English Dictionary
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Coincident disruptive coloration
Coincident disruptive coloration or coincident disruptive patterns are patterns of disruptive coloration in animals that go beyond the usual camouflage Disruptive eye mask One form of coincident disruptive coloration has special importance. wikipedia.org
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coincident
coincident/kəuˈɪnsɪdənt; ko`ɪnsədənt/ adj(fml 文) happening at the same time by chance 巧合的. 牛津英汉双解词典
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Linear algebra stating two lines are coincident How can I say that two lines are coincident to each other? The lines are $x+y=2$ and $2x+2y=4$. My guess would be below. However, is this correct use of math logic? $$x...
You have to understand that a point P is in a line, if and only if, the cordinates of P satisfy the line's equation Take a point $P=(x_0,y_0)$ in $r_1: x+y=2$. So $x_0+y_0=2$ But $$2 \cdot (x_0+y_0)=2 \cdot 2 = 2x_0+2y_0 = 4$$ thus p also belong to $r_2:2x+2y=4$ Therefore, $P\in r_1 \Leftrightarrow ...
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Find the possible values of $p$ for which the equation has coincident roots. Find the possible values of $p$ for which the equation $(2p+3)x^2+(4p-14)x+16p+1=0$ has coincident roots. Coincident roots means 'equal roo...
You should have $-112p^2 -312p + 184=0$
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Projective geometry. Interpretation of a cross product between a line coincident with a point Let $p \in \mathcal{P}^2$ be a point in projective 2-space coincident with a line $l\in\mathcal{P}^2$ such that $l^\top p =...
This is not a natural operation between lines and points. The cross product of two different lines is a point (intersection) and the cross product of two different points is a line (connecting the points). In this case you have to take the dual of either the point or the line. In the first case the ...
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Show that the line $3x-4y=25$ and the circle $x^2+y^2=25$ intersect in two coincident points. Show that the line $3x-4y=25$ and the circle $x^2+y^2=25$ intersect in two coincident points. What does two coincident poin...
Coincident means "occurring together in space or time", so two possible coincident points are actually one point.
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Understanding Leading, Lagging, and Coincident Indicators
Feb 7, 2024Leading Indicators. These are economic indicators which display a tendency to change trend in advance of the business cycle, and thereby the overall economy, doing so.
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Two vectors with the same normal surface projection and the same normal surface cross product, are equal? I have two vectors, $\mathbf a$ and $\mathbf b$, that fulfill the following conditions: $(\mathbf a-\mathbf b...
Yes it is correct, indeed we have that * $(\vec a-\vec b)\times \vec n=\vec 0 \implies \vec a-\vec b$ is a multiple of $\vec n$ that is $\vec a-\vec b=k\vec n$ * $(\vec a-\vec b)\cdot \vec n=0 \implies \vec a-\vec b$ is orthogonal to $\vec n$ that is $k\vec n\cdot \vec n=0 \implies k=0$ therefore $$...
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Equilateral triangle inscribed in a ellipse **"Given any point on a ellipse, is it always possible to inscribe an equilateral triangle, with a vertex coincident with that point, in the ellipse?"** I thought I could u...
I have an idea, but a rigorous proof based on this idea may be a bit tough. Nevertheless, perhaps you find it useful. For each $r>0$, consider the circle centered on the given point $P$ of the ellipse with radius $r$. If the circle intersects the ellipse two points, they will be at a distance $d(r)$...
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The right derivative of a convex function $f$ is right continuous $\iff$ $f$ is differentiable Let be $f$ a convex function defined on an open set. We know from theory that $f'_{+},f'_{-}$ both exist not decreasing. ...
This is not true. Let $f(x)=0$ for $x<0$ and $f(x)=x$ for $x \geq 0$. Then $f'(x+)$ is right continuous but $f$ is not differentiable at $0$.
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Ellipse on a Circular Cylinder in Cylindrical Coordinates Is there an equation in cylindrical coordinates for an ellipse (tilted at some angle) on the surface of a right circular cylinder of radius r? For simplicity, ...
For _greater_ simplicity, is better that cylinder axis $=$ $z$-axis. Let be $R$ the cylinder radius, $ax + by + cz + d = 0$ the plane containing the ellipse. Then, $r = R$ and $$a R\cos\theta + b R\sin\theta + cz = d.$$
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Lines and planes - general concepts I've come across a book that has this general questions about lines and planes. I can't agree with some of the answers it presents, for the reasons that I'll state below: True or F...
Assuming 3D Euclidean geometry: * On point 1 if the three points are collinear there is more than one plane * I would agree with the book and disagree with you on point 2 for a suitable definition of _intersecting_ (at exactly one point). * I would disagree with the book on point 4 (consider the thr...
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Understanding Intersection of Two Planes I'm trying to understand the meaning of this equation (2+s-3t, -1-2s+t, 3-t) (s,t∈R) Supposedly this is the intersection of two planes, however it seems to me that this is sti...
Your vector can be written $$\begin {pmatrix}2 \\\\-1\\\ 3 \end {pmatrix} + s \begin {pmatrix}1\\\\-2\\\ 0 \end {pmatrix} + t \begin {pmatrix}-3\\\1\\\ -1 \end {pmatrix} $$ which does represent a plane. The first vector represents a point on the plane and the other 2 vectors form a basis for the pla...
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Basic conditional probability calculation needed from table question/ evidential reasoning This is a _very_ basic probability question. I'm trying to calculate P(d1|g3) as given below. I don't get .63. I'm wondering w...
This table is representing the conditional probabilities $P(g^1|i^0, d^0)$, and others like that. Let $X$ represent $i^0,d^0$ for convenience. Adding the first row, we have $P(g^1|X)+P(g^2|X)+P(g^3|X)=\frac{P(g^1\cap X)}{P(X)}+\frac{P(g^2\cap X)}{P(X)}+\frac{P(g^3\cap X)}{P(X)}=\frac{P(X)}{P(X)}=1$,...
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