What curve does 4x 2+xy+y 2 = 1 represent? How to draw it with a geometric sketchpad?

You can use Mathematica or Matlab, Maple, etc.

Mathematical software is a software specially used for mathematical operation, mathematical planning, statistical operation, engineering operation, drawing mathematical graphics or making mathematical animation. ?

Intelligent math software includes: enjoy math assistant? mathtool？ Practical mathematics software. ?

The famous mathematical softwares are: Matlab, Mathematica, Maple, MathCad, Scilab, SAGE, etc. ?

The famous statistical software includes: SAS, SPSS, Minitab, etc. ?

The software of mathematical planning includes: Lingo, Lindo, etc. ?

Drawing software includes: geometric sketchpad, Matlab, etc. ?

Math typing software includes: Mathtype, Latex, Lexiang Math Assistant, etc. ?

Engineering calculation software includes: Ansys (finite element software) and so on. ?

This is the statement that Mathematica draws a curve 4x 2+xy+y 2 = 1:

Plot3D[4？ x^2？ +? x*y？ +? y^2？ ==? 1,? {x，？ -3,? 3},? {y，？ -2,? 2}]

The image is:

Is it better for high school students to take the general college entrance examination or the art college entrance examination?

The answer to the next math workbook in grade four

Journal of Mathematics Learning and Research

When is the current edition of the sixth grade mathematics textbook published by People's Education Press?

Mathematical feedback group

I am a science student in senior three, and the college entrance examination is coming soon. My math is very poor. What should I do?

Is the CPA certificate difficult to test?

What are the majors in Peking University that can take double degrees?

On the free fall of people and elevators

2 12 1 Math 1