Error using root on complex polinomial

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DANIEL MARTIN
DANIEL MARTIN 2019-6-1
评论： DANIEL MARTIN 2019-6-1
Hi everyone,
I got this error message and i can't figure it out, tryed a few times with different equations
z=x^2-1
works, but the following isn't working
syms x;
z=x^3+2*abs(x^2);
r=root(z,x);
Error using mupadengine/feval (line 163)
The first argument must be a polynomial or polynomial expression.
Error in sym/root (line 36)
r = feval(symengine, 'RootOf', f, x);
I've got to use the R2015b version since it's the last 32bit build

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回答（1 个）

KALYAN ACHARJYA
KALYAN ACHARJYA 2019-6-1
编辑：KALYAN ACHARJYA 2019-6-1
Its roots not root
Pass single variable roots(p)
  1 个评论
DANIEL MARTIN
DANIEL MARTIN 2019-6-1
Using roots and passing only z it returns a 0x1 sym variable, does it means there ar no roots for that equation?

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