minthao_2011
Reputation
1,815
Next privilege 2,000 Rep.
 Nov 17 comment How to select three points $A$, $B$, $C$ from the following list so that the circle passing $A$, $B$, $C$ has centre $(1,2,3)$? I want the triangle ABC is not a right triangle. But with three vertices {{-3, -2, 1}, {-3, -2, 5}, {5, 6, 1}}, this is a right triangle. where is wrong in my code? Nov 17 comment How to select three points $A$, $B$, $C$ from the following list so that the circle passing $A$, $B$, $C$ has centre $(1,2,3)$? Maybe my Pick[...] is wrong. Please help me. Nov 17 comment How to select three points $A$, $B$, $C$ from the following list so that the circle passing $A$, $B$, $C$ has centre $(1,2,3)$? For example {-3, 4, -1}, {-1, 6, 7}, {3, 6, 7} Nov 17 comment How to select three points $A$, $B$, $C$ from the following list so that the circle passing $A$, $B$, $C$ has centre $(1,2,3)$? @DanielLichtblau I can not. Please help me. Nov 17 comment How to select three points $A$, $B$, $C$ from the following list so that the circle passing $A$, $B$, $C$ has centre $(1,2,3)$? I check some circle. It's wrong. That is mean center not at $(1,2,3). Nov 16 comment How to select three points$A$,$B$,$C$from the following list so that the circle passing$A$,$B$,$C$has centre$(1,2,3)$? @SjoerdC.deVries Please check my code. Am I wrong? I want to choose the triangles aree not right triangle. Nov 16 comment How to select three points$A$,$B$,$C$from the following list so that the circle passing$A$,$B$,$C$has centre$(1,2,3)$? @belisarus You wrote Flatten[tt, 1], {3}]. What is the tt? Nov 15 revised How to select three points$A$,$B$,$C$from the following list so that the circle passing$A$,$B$,$C$has centre$(1,2,3)$? edited body Nov 15 comment How to select three points$A$,$B$,$C$from the following list so that the circle passing$A$,$B$,$C$has centre$(1,2,3)$? You are wrong. For example three points (-3, -2, 1), (-3, -2, 5) and (-3, 0, -1) has centre (-3,2,3). Nov 15 asked How to select three points$A$,$B$,$C$from the following list so that the circle passing$A$,$B$,$C$has centre$(1,2,3)$? Oct 29 comment How to find the domain and range of an implicit function? Perhalf it is wrong with the function f[x_] := (x^2 + x + 1) (x^2 + x + 2) Oct 10 comment How can I get the exact solution of this equation (inequality equation)? I think, Thread[Power[Sqrt[8 16^x - 1/2 9^x] == 3 4^x - 3^x, 2], Equal]; Reduce[{%, 3 4^x - 3^x >= 0} , x, Reals] // Simplify Oct 10 accepted How can I get the exact solution of this equation (inequality equation)? Oct 10 revised How can I get the exact solution of this equation (inequality equation)? added 234 characters in body Oct 10 asked How can I get the exact solution of this equation (inequality equation)? Oct 5 comment Find the value of parameter so that the equation has one solution @Michel E2 If I want to the equation$x^4+2(m+1)x^2 - m - 4 =0$has three reals solutions. How can I get it? Oct 3 accepted How to get a list of pairs into the form$(x,y)$? Oct 3 comment How to get a list of pairs into the form$(x,y)$? In my country, the pair of solution must be formated like that. After Mathematica out put, I use TeXform to convert them. Oct 3 asked How to get a list of pairs into the form$(x,y)\$? Sep 26 comment How to choose three points on the circle so that the triangle is not a right triangle? Thank you very much.