WBJEE 2017 Math Solved Paper

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Question : 19 of 75

Marks: +1, -0

Let f(x) = x13+x11+x9+x7+x5 +x3+x+19. Then f(x) = 0 has

13 real roots
only one positive and only two negative real roots
not more than one real root
has two positive and one negative real root

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