EC > GATE 2013 SET-1 > Polynomials
A polynomial f(x) = a4x4 + a3x3 + a2x2 + a1x − a0 with all coefficients positive has
A
no real roots
B
no negative real root
C
odd number of real roots
D
at least one positive and one negative real root

Correct : d

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polynomial roots EC GATE 2013 positive and negative roots real roots polynomial GATE electrical odd number of roots polynomial no real roots GATE EC 2013 questions

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