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fricas
x:=coerce('x)$Expression(Expression Integer)

\label{eq1}x(1)
Type: Expression(Expression(Integer))
fricas
ground(x)

\label{eq2}x(2)
Type: Expression(Integer)
fricas
variables x

\label{eq3}\left[ \right](3)
Type: List(Symbol)
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ex1:=sin(x)$Expression(Expression Integer)

\label{eq4}\sin \left({x}\right)(4)
Type: Expression(Expression(Integer))
fricas
kernels ex1

\label{eq5}\left[ \right](5)
Type: List(Kernel(Expression(Expression(Integer))))

fricas
differentiate(ex1,'x)

\label{eq6}0(6)
Type: Expression(Expression(Integer))

fricas
numer ex1

\label{eq7}\sin \left({x}\right)(7)
Type: SparseMultivariatePolynomial?(Expression(Integer),Kernel(Expression(Expression(Integer))))

fricas
f:=operator 'f

\label{eq8}f(8)
fricas
f(x)

\label{eq9}f \left({x}\right)(9)
Type: Expression(Expression(Integer))
fricas
opdiff:=operator(operator('%diff)$CommonOperators)$Expression(Expression Integer)

\label{eq10}\%diff(10)
fricas
%x:=coerce('%x)$Expression(Expression Integer)

\label{eq11}\%x(11)
Type: Expression(Expression(Integer))
fricas
l1:=concat(concat([f(%x)],[%x]),[x])

\label{eq12}\left[{f \left({\%x}\right)}, \: \%x , \: x \right](12)
Type: List(Expression(Expression(Integer)))

fricas
kernel(opdiff,l1,3)$Kernel(Expression(Expression Integer))

\label{eq13}{f_{\ }^{,}}\left({x}\right)(13)
Type: Kernel(Expression(Expression(Integer)))
fricas
ex2:=coerce(%)$Expression(Expression Integer)

\label{eq14}{f_{\ }^{,}}\left({x}\right)(14)
Type: Expression(Expression(Integer))

fricas
kernels ex1

\label{eq15}\left[ \right](15)
Type: List(Kernel(Expression(Expression(Integer))))
fricas
kernels ex2

\label{eq16}\left[{{f_{\ }^{,}}\left({x}\right)}\right](16)
Type: List(Kernel(Expression(Expression(Integer))))
fricas
variables ex2
>> Error detected within library code: not a kernel

fricas
differentiate(f(x),'x)

\label{eq17}0(17)
Type: Expression(Expression(Integer))
fricas
kernels %

\label{eq18}\left[ \right](18)
Type: List(Kernel(Expression(Expression(Integer))))




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