Example of symbolic expressionwhen there is more than one, Ask an Expert

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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 =

-b/a

Though, it is possible to identify which variable to solve for:

>> solve('a*x^2 + b*x','b')

ans =

-a*x

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MATLAB, Engineering

Category:- MATLAB
Reference No.:- M9512905

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