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Roberto 37 September 23rd, 2018 11:17 AM

polynomials
 
Check the alternative CORRETA that presents one of the zeros of the complex polynomial P (x) = - i · x³ + 2 · x² - 2 + i?

a) The complex number i.
b) The whole number 1.
c) The integer -1.
d) The complex number 2 · i.

mathman September 23rd, 2018 12:50 PM

Trivially b). Just plug them in.

Roberto 37 September 23rd, 2018 12:59 PM

Quote:

Originally Posted by mathman (Post 599538)
Trivially b). Just plug them in.


I replace 1 in the equation, is that correct?

skipjack September 23rd, 2018 04:45 PM

Yes.


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