WBJEE 2022 Math Solved Paper

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Question : 69 of 75

Marks: +1, -0

Let f(x)=x2+x‌sin‌x−cos‌x. Then

f(x)=0 has at least one real root
f(x)=0 has no real root
f(x)=0 has at least one positive root
f(x)=0 has at least one negative root

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