GATE Electronics and Communications (EC) 2018 Solved Paper

Question : 16 of 65

Marks: +1, -0

Consider

p_{s} = s^{3} + a_{2}s^{2} + a_{1}s + a_{0}

with all real coefficients. It is known that its derivative p'(s) has no real roots. The number of real roots of p(𝑠) is:

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