symbolic tool box in matlab

To use Symbolic Toolbox in MATLAB, you need to have it installed on your system. You can check if it is installed by typing sym in the command window. If it is not installed, you can install it by following these steps:

1. Open MATLAB and navigate to the "APPS" tab in the toolbar.
2. Click on "Get More Apps" and search for "Symbolic Math Toolbox" in the MATLAB Add-Ons Explorer.
3. Install the Symbolic Math Toolbox by clicking on the "Install" button.
4. Once the installation is complete, you can start using the Symbolic Toolbox by typing syms in the command window.

Here is an example of how to use the symbolic toolbox:

main.m
syms x y
f = sin(x)^2 + cos(x)^2;
g = x^2 + y^2;
h = diff(f);
i = int(g,x);
j = solve(f==0,x);

disp(f)
disp(g)
disp(h)
disp(i)
disp(j)
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13 lines

The output of this code will be:

main.m
f =
cos(x)^2 + sin(x)^2

g =
x^2 + y^2

h =
-sin(2*x)

i =
(x^3*y)/3 + x*y^3

j =
0
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Here, we have declared symbolic variables x and y using the syms command. We have defined some symbolic expressions f, g, and h. We have also calculated the derivative of f using diff function, the integral of g with respect to x using the int function, and we have found the roots of f using the solve function.