KVPY Government Jobs Exams

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

Read Solution (Total 0)

KVPY Other Question

The smallest possible positive slope of a line whose y-intercept is 5 and which has a common point with the
ellipse 9x^2 + 16y^2 = 144 is- The maximum possible value of x^2 + y^2 – 4x – 6y, x, y real, subject to the condition | x + y | + | x – y | = 4
(A) is 12 (B) is 28 (C) is 72 (D) does not exist