Adversity Testing MATLAB. Why does matlab say this?

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Seetha Rama Raju Sanapala el 16 de En. de 2015

Comentada: David Young el 16 de En. de 2015

I give this command and get answer as below. What does this mean? I was simply doing adverstity testing of MATLAB.

 syms x
 s=solve(sin(x)^2 + cos(x)^2 == 1)
 s =
   C_

David Young el 16 de En. de 2015

C_ is the set of complex numbers. That looks right, since the identity is true for any value of x.

Seetha Rama Raju Sanapala el 16 de En. de 2015

How did you know about C_? Where can I get this information?

David Young el 16 de En. de 2015

Note that in my answer, C_ is a link to the documentation. I found it by Googling "matlab symbolic toolbox C_".

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