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Matlab is a widely used software for computations in science and engineering. It provides a convenient interface with a command line interface, to manipulate data and write programs. The Matlab Symbolic Math Toolbox allows to write mathematical expressions in Matlab code, which can be used as input for the solvers. In order to use this toolbox, you need to have Matlab installed on your computer. In case you do not have it yet, the following link gives you direct access to download it free of charge from the official portal: https://www.mathworks. com/products/matlab.html To use the symbolic math toolbox, make sure you are in the file explorer of Matlab. Then click on Edit->Add-Ons ->Symbolic Math Toolbox to install the toolbox. After it is installed, you will see a new menu entry on your matlab menu bar named Symbolic Math Toolbox. Right-click on that new menu entry and then click on Preferences. Once you are inside your preferences window, scroll down using your mouse until you see an entry named Show all options at once. If it is not there, you need to scroll down until you find it. It probably starts with the name Priority . When you see it, click on it so that a check mark appears. Then click on OK. Once you are back at the main window of Matlab, right-click again on the menu entry named Symbolic Math Toolbox . This time you should see a new menu entry called Solve ->Symbolic Math Toolbox. Click on that menu entry. You then will be able to type mathematical expressions in the text area provided by this toolbox. When you are done typing your expression, click on Solve . A new window will open with an output for your input expression in terms of variables or numbers or symbols present in your input equations. The above picture shows the output for the following input equations: If you want to use an operation in your input, like + or - in your input, you need to make sure that it is in quotation marks. If you do not put an operation inside quotes, it will be treated as a variable. For instance, if you type 5+6 , it will be parsed as the number 7 with the variable name 5 . However it will be treated as 5+6 if they are typed inside quotations marks. The Symbolic Math Toolbox has many solvers for many kinds of problems. They are classified by categories in order to allow quick access to them. The following link shows the list of categories currently supported by Solve - Symbolic Math Toolbox: https://www.mathworks. com/help/matlab_symbolic_mathtoolbox/ helpfile.html 1) Basic arithmetic operations +,-,*,/ 2) Special numbers 3) Linear algebraic operations +,-,*+,-.,.*,/*,^,^^,^-,^- or ^-^ (subscript operator), ^(subscript operator), ,,> (left shift). eccc085e13
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