Output is giving me "Empty sym: 0-by-1"
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syms s
g = (s^2-2*s+2)/((s+2)*(s+4)*(s+5)*(s+6))
x = diff(g)
b = roots(x)
I'm trying to solve for the roots of the differentiated function, but I'm getting the "Empty sym: 0-by-1" output, and I'm unsure why. I've followed the syntax on how everything should be, but I don't know why this is being outputted.
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채택된 답변
Walter Roberson
2019년 11월 11일
roots() is not explicitly defined for symbolic expressions, and will not work for scalar symbolic expressions. It is also only defined for polynomials, but g is not a polynomial. Instead use
b = solve(x);
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추가 답변 (1개)
JESUS DAVID ARIZA ROYETH
2019년 11월 11일
solution:
syms s
g = (s^2-2*s+2)/((s+2)*(s+4)*(s+5)*(s+6))
x = diff(g)
b = double(solve(x))
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