how to include both the positive and negative sign for a given expression
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I am working on inverse kinematic problem for a planar 3r robot where i needed to include the following expression.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/271525/image.png)
i am not able to figure out how to incorporate +,- sign to the expression.
any help in this regard is appreciated
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Walter Roberson
2020-2-14
To be clear: MATLAB does not have a ± operator so you have to do the equivalent yourself.
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