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visits member for 2 years
seen 17 hours ago

Jul
2
awarded  Curious
Jun
10
accepted Combine a contour plot of a conic and an inset with an polygon such as all its vertices are on the conic
Jun
9
comment Combine a contour plot of a conic and an inset with an polygon such as all its vertices are on the conic
@Kuba Correct! I didn't think about using {ColorData["Legacy", "Banana"], EdgeForm[{Thick, Pink}], Opacity[0.15], Polygon[{a, b, c, d}]} in the Epilog instead of Inset... to achieve the same result. Inset obviously here was a wrong option and I guess that finding correctly the right Size would have been challenging and futile. I consider your comment as an answer.
Jun
9
asked Combine a contour plot of a conic and an inset with an polygon such as all its vertices are on the conic
May
11
awarded  Informed
May
6
accepted How to efficiently drag points on a curve within a Manipulate
May
6
comment How to efficiently drag points on a curve within a Manipulate
Michael I understand your idea: the locator is the point that is dragged.When I manipulate your solution it seems that the locator is always precisely on the conics.But after having modified your answer by Appearance -> Style[".", 40, Red]] the point can be slightly off the conic and this baffles me. Any idea why ?(By the way there is a comma too much in your last line). See youtube.com/watch?v=h9VCsX54irM which gave me the idea to reproduce something similar with MMA (but far for me to compare Geogebra with MMA) .
May
5
comment How to efficiently drag points on a curve within a Manipulate
@MichaelE2 Yes, you can update my question like that if you are sure that it can only be answered by restricting a locator (that I would like not to see). My question is more general and open I don't assume that restricting a locator is the only way, even if I started coding like that because I know of no other. Kuba gave me a nice answer based on restricting transparently a locator.
May
5
revised How to efficiently drag points on a curve within a Manipulate
last paragraph reworded in order to make it more understandable.
May
3
revised How to efficiently drag points on a curve within a Manipulate
redundancy of words
May
3
asked How to efficiently drag points on a curve within a Manipulate
Mar
22
comment Intersection of any triangle with a circle in Cartesian coordinates
Yes, I start with 3 points for the triangle , 1 point for the centre of the circle, length of its radius. I could not find a way to write a single Solve between the equation of the circle and an analytic expression representing the triangle. Precision of the intersection points coordinates is very important.
Mar
22
revised Intersection of any triangle with a circle in Cartesian coordinates
rewording of the first paragraph, to make clearer what my question is about
Mar
22
comment Intersection of any triangle with a circle in Cartesian coordinates
The question is about getting the cartesian coordinates of the points where a circle intersects a triangle - with less code as here where I had to plot three lines and solve three equations, where each line intersects the circle.
Mar
21
asked Intersection of any triangle with a circle in Cartesian coordinates
Mar
2
accepted Implementing nested subtotals
Mar
2
comment Implementing nested subtotals
thanks for your extended and adaptive answer which made discover the usefulness of FlipView. I thought about partly emulating the Excel pivot tables but it is a question too presumptuous to ask by a modest MMA user as myself who may not thoroughly understand any answer received.
Feb
28
asked Implementing nested subtotals
Jan
19
comment Solving a polynomial equation with a condition of equality on roots
Indeed! Easier with MMA than with algebra demonstrations! Thanks
Jan
18
comment Solving a polynomial equation with a condition of equality on roots
I'm impressed. How did you find out the relations r1*r2 + r1*r3 + r2*r3 == q, r1*r2*r3 == r - It's not a MMA question but an algebra question.