Linked Questions
22 questions linked to/from How to get intersection values from a parametric graph?
9
votes
4
answers
3k
views
How do you find the self-intersection points of a single parametric trigonometric function? [duplicate]
How do you use Solve or FindRoot or other Mathematica functions to find the points at which the graph of ${\bf a}(t) = 3 \cos (3....
- 91
3
votes
4
answers
905
views
Find Where a Parametric Equation Overlaps [duplicate]
I have a parametric equation:
r[t_] = {2.9 Cos[3.2 Pi t], Sin[4 Pi t] + 5 t};
which overlaps at a point in the $\{-x, y\}$ region of a plot.
I'm trying to ...
- 41
40
votes
2
answers
18k
views
Marking points of intersection between two curves
I'm trying to illustrate the solutions numerically and graphically for an equation such as Tan[x] == x. I think I did everything ok except I wanted to mark each ...
- 676
17
votes
2
answers
1k
views
Symbolic area calculation for a parametric self-intersecting closed curve
The parametric equation of the curve is:
$$\begin{cases}
x &= -9 \sin (2 t)-5 \sin (3 t) \\[6pt]
y & = 9 \cos (2 t)-5 \cos (3 t)
\end{cases}\quad t\in[0,2\pi]$$
which can be easily ...
- 3,017
12
votes
2
answers
2k
views
Finding all possible solutions to a math mind game
In the example below the letters shall be replaced by numbers. The numbers are from 1 to 9, and each letter has the same number (...
- 3,081
4
votes
1
answer
6k
views
Finding intersection of two graphs
Here is a toy problem:
I have a (directional) line that starts from {2,0} and goes through {1.8, 0.01}. Also I have a ...
- 145
6
votes
5
answers
591
views
How to find where a parametric curve overlaps itself, problem with calculation?
This should work? But it is giving me the wrong t values
- 61
4
votes
4
answers
1k
views
11
votes
2
answers
722
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ParametricPlot3D Self Intersection
I would like to know where my ParametricPlot3D
intersects itself and to extract all intersections (points, lines, surfaces...) to animate them by changing ...
- 145
2
votes
3
answers
1k
views
Marking specific points on a 3D curve
Here is the curve below. (written as a position vector)
r = {Cos[7 Pi*t], Cos[6.2*Pi*t], 2.5*t}
ParametricPlot3D[r, {t, 0, 2}]
I want to know how I can mark ...
- 23
1
vote
2
answers
459
views
Polar graph of the Riemann zeta function
I would like to plot a complex graph of the Riemann zeta function on the Argand diagram $ς(s)$, where $s = \frac{1}{2} + i t $, and the value of $t$ is varied to get a graph in the polar form.
Can ...
6
votes
2
answers
703
views
Why doesn't Roots work on a certain quartic polynomial equation?
Bug introduced in 9.0 or earlier and fixed in 10.0
In everything that follows I am using Roots to get the solutions to the equations.
I start off with this ...
- 1,171
4
votes
2
answers
485
views
How do I know the calculation time of an equation solving?
Solve[ Sqrt[Abs[x]^2+Abs[-5+y]^2]+Sqrt[Abs[-5+x]^2+Abs[y]^2]
+Sqrt[Abs[5+x]^2+Abs[y]^2]+Sqrt[Abs[x]^2+Abs[5+y]^2]==24 &&
-6 < x < 6, y]
...
- 707
0
votes
1
answer
4k
views
Finding the intersection of two graphs [duplicate]
I'm having difficulty with finding the intersecting point of two graphs. Here is what I have done so far:
Plot[{8*n^2, 64*n*Log2[n]}, {n, 0, 100}]
which produces ...
user27494
2
votes
0
answers
3k
views
FindRoot in range
I am trying to find all roots in a range, using
y /. FindRoot[Sin[y] == 0, {y, #}] & /@ Range[7]
which gives
...
- 8,152