The discussion revolves around plotting systems of equations in MATLAB, focusing on how to visualize multiple equations using the software. Participants share code snippets and techniques related to plotting, as well as their experiences with MATLAB's plotting functions.
Participants generally agree on the methods for plotting in MATLAB, but there is no consensus on the best approach for plotting multiple equations, as different techniques are suggested without resolution.
Some assumptions about the familiarity with MATLAB commands and syntax are present, and there may be limitations in the provided code snippets regarding the handling of different types of equations or more complex systems.
This discussion may be useful for individuals learning to use MATLAB for plotting mathematical functions, particularly those interested in visualizing systems of equations.
x=[-5:.1:5]; % x is a vector containing the numbers -5, -4.9, -4.8, ..., 4.9, 5. Semicolon means don't display to screen
y=4x.^3 - 2x.^2 - 12; % The '.'^ raises each element of the vector to the power listed.
% If you just did ^ it would do matrix multiplication which doesn't work unless the matrix is square.
plot(x,y,'r*') % Plot variable X on the horizontal axis, y on the vertical, and display the points as red stars
figure(1)
plot(x1,y1)
hold on
plot(x2,y2)
plot(x3,y3)
hold off