# Tagged Questions

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166 views

### Intersection coordinates of two spheres

I am trying to obtain a list of coordinates at which two spheres intersect. Take for example the spheres: sp1=Sphere[{0, 0, 0}, 1] and ...
151 views

### Projecting a Graphics3D object onto a plane

I would like to project a 3-dimensional cone onto a plane and mark the intersection (which is an ellipse) with a line. I find cone2 by performing a transformation ...
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### Intersection of TimeSeries (reducing a list of TemporalData objects to common dates)

It is possible to do simple math between TemporalSeries objects. For example ...
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### Finding area of intersection regions

I want to be able to find the area of the intersection between a hexagon and a slice. I have tried RegionMeasure or Area but I ...
358 views

### Draw a circle through 4 points on parabola [closed]

I have two dynamic perpendicular parabolas: $y=ax^2+c, x=by^2+d$, which intersect in four points (the coefficients are chosen that way). There is a fact that we can construct a circle through these ...
375 views

### Equation for the line of intersection between two planes

I have two equations: 2x + y + z = 1 3x - 2y - z = 5 And I have calculated the answers on paper, which gave me $x = 1 + t$, $y = -1 + 5t$ and $z = -7t$. So my ...
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### How to compute the boundary of a group of ellipse efficiently?

Update1 I discovered that the bountary of a series of ellipses consists of the following three parts Part (I): the first ellipse's effective black-segment; Part (II): the effective ...
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### Partition a line around intersections

I've got a bunch of lines (ideally in a single Region) as well as a single new line, e.g.: ...
85 views

### RegionIntersection: Point or Line?

This may be a minor point, but I'm wondering why RegionIntersectionof the two rectangles below gives 3 Lines rather than 2 Lines and 1 Point. ...
64 views

### Fast way to compute intersection of equivalence classes

There is a set $S=\{1, 2, \dots, m\}$ and $n$ equivalence relations on the set: $a \sim_i b$, where $a,b \in S$, $i=1, \dots, n$. Now we define $a \sim b$ iff $a \sim_i b$ $\forall i=1, \dots, n$. ...
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Code ...
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### How to define where a line intersects its reflection

It is relatively easy to be able to find where two parametric functions intersect each other, but how about when one is a function and the second is its reflection? In the example below is it possible ...
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### How to get the intersection of three different curves [closed]

There are two functions, f(x,y)=x + y^2 - 8; g(x,y)=-3 x^2 + y^2 - 5; How can I get the intersection of these two curves? And how about the intersection among f(x,y),g(x,y) and z=0? Thanks
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### Show intersection points between a curve and a line [duplicate]

I'm pretty new to Mathematica. I'd like to show the intersection points in my graphic. These are my inputs: ...
92 views

### Intersection of two volumes [closed]

I would like to know the volume of the intersection of a cone and a cuboid : ...
104 views

### Intersection of a MeshRegion and InfinitePlane

The documentation says that RegionIntersection is not implemented for MeshRegion objects embedded in 3D. But I have one such region and would like to slice it with ...
275 views

### Finding intersection points of two graphics

I am drawing a curve from a list using: ...
169 views

### Intersecting cone surfaces

Given two cone surfaces with common vertex O in 3D: Given are: Coordinates of point O Vectors OP, OL (OL is height for the green cone), OR (height of the blue cone), OC I would like to know the ...
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### RegionIntersection of a scaled cone? (elliptical cone)

I can generate the intersection of a line and a cone (from the example in the documentation). Is there a simple way to do the same for a line and an elliptical cone? i.e., this works: ...
204 views

### Intersecting RegionPlots [closed]

Does the Mathematica graphics system have any concept of intersecting regionplots? I've found about intersecting graphics but not regionplots so far. For example, if I want to show the intersection of ...
92 views

### How to find the same number in sublists of list

Intersection[Table[Table[Sqrt[p1]/r1,{r1,0.1,0.7,0.1}],{p1,0.5,5,0.5}]] I am trying to find same numbers in the sublists. But Intersection is not working for this....
205 views

### Re-parameterizing sections of a Bézier curve into normal Cartesian functions [closed]

I have a table: ...
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### Finding intersection of two infinitely long lines using points [duplicate]

EDITED In the Find intersection of pairs of straight lines problem, it is assumed that line are intersected by default and the purpose is to find the intersection points. In the present problem, two ...
139 views

### Finding self-intersections of a closed curve represented by an interpolation function

I've been trying to find particular simple closed curves on a plane. ...
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249 views

### Poincaré section for 3BP

I try to plot the PoincarĂ© section for the 3BP i use the following code that works very well: ...