Let f x x 12 x 9 x 4 x 1 Which of the following is true n A f

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Latest KVPY Aptitude Question SOLUTION: Let f(x) = x^12 – x^9 + x^4 – x + 1. Which of the following is true ? (A) f is one-one (B) f has a real root (C) f ′ never vanishes (D) f takes only positive values

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Let f(x) = x^12 – x^9 + x^4 – x + 1. Which of the following is true ?
(A) f is one-one
(B) f has a real root
(C) f ′ never vanishes
(D) f takes only positive values

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Latest KVPY Aptitude Question SOLUTION: Let f(x) = x^12 – x^9 + x^4 – x + 1. Which of the following is true ? (A) f is one-one (B) f has a real root (C) f ′ never vanishes (D) f takes only positive values

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Category (1)

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(#M40027212) KVPY question Mental Ability Keep an EYE

Let f(x) = x^12 – x^9 + x^4 – x + 1. Which of the following is true ? (A) f is one-one (B) f has a real root (C) f ′ never vanishes (D) f takes only positive values

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Let f(x) = x^12 – x^9 + x^4 – x + 1. Which of the following is true ?
(A) f is one-one
(B) f has a real root
(C) f ′ never vanishes
(D) f takes only positive values