WBJEE 2020 Math Solved Paper

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Question : 50 of 75

Marks: +1, -0

Let f(x)=x13+x11+x9 +x7+x5+x3+x+12. Then

f(x) has 13 non-zero real roots
f(x) has exactly one real root
f(x) has exactly one pair of imaginary roots
f(x) has no real root

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