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larry
  • Member for 9 years, 8 months
  • Last seen more than a month ago
0 votes
1 answer
2k views

plot a surface using plot3d etc within a sphere

6 votes
0 answers
1k views

Is it possible to simplify an expression in vector form, which involves crossproduct and dot product?

11 votes
3 answers
1k views

Plotting triple data points while xy data are not regular

4 votes
1 answer
1k views

getting the coordinates of the boundary of a 3d region

7 votes
2 answers
826 views

ContourPlot3d quality very poor

0 votes
1 answer
647 views

ParametricPlot3D etc. with parameters satisfying an implicit relation

0 votes
2 answers
612 views

NSolve does not calculate, just copies the input [duplicate]

1 vote
2 answers
489 views

fail to export the 3d figures in eps form correctly in the 10.4.1.0 version

1 vote
1 answer
400 views

Need help on simplifying the integral of a square root of a polynomial

1 vote
1 answer
382 views

Nsolve gives solutions with a small complex part which can't be eliminated by chop command

4 votes
1 answer
368 views

specify the same viewpoint for different figures

4 votes
1 answer
307 views

Plot a revolution surface, with two cross sections to show its shape

1 vote
2 answers
231 views

Extract different part of a polynomial with square root $a(x)+b(x)\sqrt{c(x)}$

0 votes
1 answer
219 views

a puzzling thing happened to a simple problem on the rotation matrix

3 votes
1 answer
211 views

any way to stop all the following evaluations?

1 vote
2 answers
176 views

how to get rid of the denominator in the squareroot, that appears in the denominator?

2 votes
2 answers
172 views

How to split many controls in Manipulate into multiple columns (saw some potential bugs)

2 votes
1 answer
168 views

to control the existence and distribution of meshes along x y z separately in ParametricPlot3D or SphericalPlot3D

1 vote
1 answer
157 views

How to factor a quartic equation whose coefficient has unknown parameters?

2 votes
3 answers
136 views

How can I substitute $s_x$ for Sin[x] in output to make an expression compact

2 votes
1 answer
124 views

Is it possible to view a notebook note in mind-map form?

0 votes
2 answers
124 views

How to get the normal vector of a planar curve pointing "outside" (its circle of curvature)?

1 vote
0 answers
100 views

Region traced by the endpoints of all vectors given by a parametric expression [closed]

0 votes
0 answers
91 views

to reduce the unknowns of a set of equations with several symbolic coefficients, e.g. using the GroebnerBasis

0 votes
1 answer
83 views

any way to store the values of the controls of a Manipulate so that one can reuse them in the future excutions

1 vote
0 answers
82 views

How to draw sketches of objects using lines (curves) only

1 vote
0 answers
70 views

fail to export to eps or pdf in vector form in 11.0 version [duplicate]

0 votes
1 answer
61 views

Is it possible to get rid of the square root in the solutions of the following symbolic quadratic equation?

2 votes
1 answer
60 views

how to display Sin[Subscript[\alpha,i]/2] as $s_{\bar{\alpha}_i}$ using e.g., Makeboxes?

1 vote
1 answer
55 views

find the planar curve that passes two given points, whose tangent directions at these two points are also given