## 290 Reputation

6 years, 143 days

## MaplePrimes Activity

### These are replies submitted by minhthien2016

@Kitonum I have just an equation solve(abs(-2*x+5)+abs(-2*x+9)-x^2+7*x-16 = 0, x); by trying many times. Please write a procedure to solve this problem.

## I found one equation...

@Carl Love I found one equation
solve(abs(-2*x+5)+abs(-2*x+9)-x^2+7*x-16 = 0, x);

## Sorry...

@vv I am sorry about my edit.

## I edited my question...

@Carl Love I have just edit my question. I am sorry.

## Thank you very much...

@Kitonum Thank you very much.

## ABCD is not a convex quadrilateral...

@Kitonum I tried your code and copy all coordinates to LaTeX. I see that, ABCD is not a convex quadrilateral.

## @Kitonum I find angles to draw in L...

@Kitonum I find angles to draw in LaTeX.

## Thank you very much...

@tomleslie Thank you very much.

## @tomleslie Now I want to put center...

@tomleslie Now I want to put center of sphere lies at Origin. How can I do that?

## Thank you very much...

@tomleslie Thank you very much.

## Thank you very much...

@Kitonum Thank you very much. The formulas calculate volume can check.

## Can you write a procedure to get message...

@Kitonum Can you write a procedure to get message there exits tetrahedron or not? I am surprise when I got the value V (volume).