Hello Frederico,
> De : Federico Miyara
> Envoyé : mardi 24 septembre 2019 00:25
>
> Is there some way of evaluating a polynomial on a square matrix in a
> matrix-wise (not component-wise) fashion?
You can transform your polynomial into a usual external function Then apply it
to a matrix.
e.g.
\\ **********
P = %s^2 + 2*%s + 3 \\ example of polynomial
C = coeff(P)
n = size(C, "c")
stringP = "Y = "+string(C(1))
for i = 2:n
stringP = stringP+" + "+string(C(i))+"*x^"+string(i-1) end
deff("[Y] = fctP(x)", stringP) \\ creation of the function corresponding to the
polynomial
\\ test
A = [1 2 ; 3 4]
fctP(A)
\\ [12. 17. ; 24. 33.]
\\ **********
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