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Say, I have

fricas
test:=D(sin(z)^2, z)

\label{eq1}2 \ {\cos \left({z}\right)}\ {\sin \left({z}\right)}(1)
Type: Expression(Integer)

What is the easiest way to see, if the output has sin(z) ?

fricas
member?(sin(z),kernels(test))

\label{eq2} \mbox{\rm true} (2)
Type: Boolean




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