How to save function to calculate in an equation?

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How do you save dydx so it's not a function and can be calculated in error?
At the moment, I get the error: "Undefined operator '-' for input arguments of type 'function_handle'." And it seems because my dydx is a function, it cannot be calculated.

回答(1 个)

Steven Lord
Steven Lord 2019-10-21
You can't add a function handle and a number.
You can add the value you receive from evaluating a function handle and a number.


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