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Example of Symbolic Expression
When there is more than one variable, the MATLAB selects which to solve for. In the illustration below, the equation ax2 + bx = 0 is solved. There are three variables. Since it can be seen from the result, that is given in terms of a and b, the equation was solved for x. The MATLAB has rules built in that to identify how to select which variable to solve for. For illustration, x will always be the first preference if it is in the expression or equation.
>> solve('a*x^2 + b*x')
ans =
0
-b/a
Though, it is possible to identify which variable to solve for:
>> solve('a*x^2 + b*x','b')
-a*x
Refer the subset of a matrix: It is also possible to refer to the subset of a matrix. For illustration, this refers to the first & second rows, second & third columns: >> m
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Minimum and Maximum Value The MATLAB has built-in functions for numerous statistics. For illustration, min and max to find the minimum or maximum value in a data set. >> x
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